FieldServer Computer Drive FS 8700 73 User Manual

-
A Sierra Monitor Company  
Driver Manual  
(Supplement to the FieldServer Instruction Manual)  
FS-8700-73 BACnet MSTP - Serial  
APPLICABILITY & EFFECTIVITY  
Effective for all systems manufactured after August 2008  
Driver Version:  
1.00  
Document Revision: 25  
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FS-8700-73 BACnet MSTP Driver Manual  
Page 3 of 24  
1.  
BACnet MSTP Description  
The BACnet Master-Slave/Token-Passing (MSTP) driver implements a data link protocol that uses the  
services of the RS-485 physical layer. See the FieldServer BACnet PIC statement for the level of  
conformance that this driver implements.  
Max Nodes Supported  
FieldServer Mode Nodes Comments  
Client  
1
Server  
32  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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Page 4 of 24  
2.  
Driver Scope of Supply  
2.1. Supplied by FieldServer Technologies for this driver  
FieldServer Technologies  
PART #  
Description  
FS-8917-16  
RJ45 to terminal connector cable.  
2.2.  
Provided by the Supplier of 3rd Party Equipment  
2.2.1.  
Required 3rd Party Hardware  
Part #  
Description  
Building control unit (BCU)1  
BACnet client such as a Trane Tracer Summit workstation2  
2.2.2.  
Optional Items  
PART #  
FS-4301-00  
Vendor/Manufacturer  
FieldServer  
Description  
RS-232 to RS-485 converter  
1 If FieldServer used as BACnet Client.  
2 If FieldServer used as BACnet Server  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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FS-8700-73 BACnet MSTP Driver Manual  
Page 5 of 24  
3.  
Hardware Connections  
The FieldServer is connected to the BACnet MSTP as shown in connection drawing.  
Configure the BACnet MSTP according to manufacturer’s instructions  
FieldServer as a BACnet MSTP Client  
FieldServer  
+
-
Gnd  
Gnd  
+
-
+
-
Gnd  
+
-
Gnd  
Server n  
Server 1  
Server 1  
FieldServer as a BACnet MSTP Server  
Client  
+
-
Gnd  
-
Gnd  
+
+
-
Gnd  
+
-
Gnd  
Server n  
FieldServer  
Server 2  
(408)-262-2299  
FIELDSERVER  
BACNET MSTP  
CONNECTION DIAGRAM  
BASE NAME:  
FILE NAME: 8700-73 .VSD  
DATE: 5/26/06  
BY: MC  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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FS-8700-73 BACnet MSTP Driver Manual  
Page 6 of 24  
3.1.  
Hardware connection Tips/Hints  
Follow standard RS-485 2-wire guidelines for installation. See connection diagram below.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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FS-8700-73 BACnet MSTP Driver Manual  
Page 7 of 24  
4.  
Configuring the FieldServer as a BACnet MSTP Client  
For a detailed discussion on FieldServer configuration, please refer to the FieldServer Configuration  
Manual. The information that follows describes how to expand upon the factory defaults provided in the  
configuration files included with the FieldServer (See “.csv” sample files provided with the FieldServer).  
This section documents and describes the parameters necessary for configuring the FieldServer to  
communicate with a BACnet MSTP Server.  
4.1.  
Data Arrays/Descriptors  
The configuration file tells the FieldServer about its interfaces, and the routing of data required. In  
order to enable the FieldServer for BACnet MSTP communications, the driver independent  
FieldServer buffers need to be declared in the “Data Arrays” section, the destination device  
addresses need to be declared in the “Client Side Nodes” section, and the data required from the  
servers needs to be mapped in the “Client Side Map Descriptors” section. Details on how to do this  
can be found below.  
Note that in the tables, * indicates an optional parameter, with the bold legal value being the default.  
Section Title  
Data_Arrays  
Column Title  
Function  
Legal Values  
Up to 15 alphanumeric  
characters  
Data_Array_Name  
Provide name for Data Array  
Float, Bit, Uint16, Uint32,  
Sint16, Sint32, Packed_Bit,  
Byte, Packed_Byte,  
Swapped_Byte  
Data_Format  
Provides data format  
Data_Array_Length  
Number of Data Objects  
1-10,000  
Example  
// Data Arrays  
Data_Arrays  
Data_Array_Name,  
DA_AI_01,  
DA_AO_01,  
DA_DI_01,  
Data_Array_Format,  
Data_Array_Length  
Float,  
Float,  
Bit,  
200  
200  
200  
200  
DA_DO_01,  
Bit,  
4.2.  
Setting the FieldServer Node_ID  
Section Title  
FieldServer  
Column Title  
Function  
Legal Values  
Specify the MAC_Address of the  
FieldServer. (See Appendix C.1)  
System_Node_ID  
1-254  
Example  
// FieldServer  
FieldServer  
Title,  
BACnet_MSTP,  
System_Node_ID  
11  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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Page 8 of 24  
4.3.  
Client Side Connection Descriptions  
Section Title  
Connections  
Column Title  
Function  
Specify which port the device is connected to the  
FieldServer  
Legal Values  
P1-P83, R1-R24  
Port  
9600,  
38400,  
Baud  
Specify baud rate  
768005  
Parity*  
Specify parity  
Specify data bits  
Specify stop bits  
Specify protocol used  
Time between internal polls  
Application logger timeout  
Odd, Even, None  
7, 8  
1,2  
BACnet_MSTP  
0-32000s, 1s  
30s  
Data_Bits*  
Stop_Bits*  
Protocol  
Poll Delay*  
Timeout  
Specify the highest possible MAC_Address that exists on  
the MSTP network. (See Appendix C.1)  
Specify the maximum number of information frames the  
connection may send before it must pass the token.  
Max_Master**  
1-127  
Max_Info_Frames  
1-65535  
Example  
//    Client Side Connections  
Connections  
Port, Baud,  
R1, 38400, None, 8,  
Parity, Data_Bits, Stop_Bits, Protocol,  
Poll_Delay Timeout  
30s  
1, BACnet_MSTP, 0.100s  
3 P1 to P8 will require the optional RS-485 converter (Part # 4301-00)  
4
Not all ports shown are necessarily supported by the hardware. Consult the appropriate Instruction  
manual for details of the ports available on specific hardware.  
5 76800 baud is supported on the X30, X25 and ProtoCessor  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
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Page 9 of 24  
4.4.  
Client Side Node Descriptors  
Section Title  
Nodes  
Column Title  
Function  
Provide name for node  
Specify the BACnet Device object instance. 6  
Specify protocol used  
Legal Values  
Up to 32 alphanumeric  
characters  
Node_Name  
Node_ID  
Protocol  
Port  
1 - 4194303  
BACnet_MSTP  
Specify port  
P1-P87, R1-R28  
1-127  
Nodes)  
1-254  
(for  
(for  
Master  
Slave  
MAC_Address  
MAC_Address of the physical server node.6  
Nodes)  
1,2,3.... 16 bit positive  
numbers.  
5
Use this parameter if the remote MSTP server device  
is on another BACnet network connected via a router.  
Network_Number*  
Example  
// Client Side Nodes  
Nodes  
Node_Name,  
BCU_1,  
Node_ID,  
1,  
Protocol,  
BACnet_MSTP,  
Port  
R1  
6
Either Node_ID OR MAC_Adddress must be specified. If the Server Node supports Who-Is and I-Am  
then it is better to use the Node_ID parameter.  
7 P1 to P8 will require the optional RS-485 converter (Part # 4301-00)  
8
Not all ports shown are necessarily supported by the hardware. Consult the appropriate Instruction  
manual for details of the ports available on specific hardware.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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Page 10 of 24  
4.5.  
4.5.1.  
Client Side Map Descriptors  
FieldServer Related Map Descriptor Parameters  
Column Title  
Function  
of this  
Descriptor  
Legal Values  
to 32 alphanumeric  
Name  
Map Up  
characters  
Map_Descriptor_Name  
Name of Data Array  
where data is to be stored  
in the FieldServer  
One of the Data Array names  
from “Data_Array” section  
Data_Array_Name  
0 to Data_Array_Length-1 as  
Starting location in Data  
Array  
Data_Array_Offset  
Function  
specified  
section  
in  
“Data_Array”  
Function of Client Map  
Descriptor  
Rdbc, Wrbc, Wrbx  
4.5.2.  
Driver Related Map Descriptor Parameters  
Column Title  
Function  
Legal Values  
One of the node names  
specified in “Client Node  
Descriptor” above  
Name of Node to fetch data  
from  
Node_Name  
AI, AO, AV, BI, BV, MI, MO,  
Data_Type  
Data type in FieldServer  
MV9  
Object_Instance  
Property*  
Address of object  
The BACnet property to be  
read  
0, 1, 2, 3, …  
Present_Value  
Data_Array_Low_Scale*  
Data_Array_High_Scale*  
Scaling zero in Data Array  
Scaling max in Data Array  
-32767 to 32767, 0  
-32767 to 32767, 100  
Scaling zero in Connected  
Node  
Scaling max in Connected  
Node  
Node_Low_Scale*  
Node_High_Scale*  
-32767 to 32767, 0  
-32767 to 32767, 100  
Allows the driver to specify  
the write priority used to write  
Write_Priority  
Custom_Type  
Custom_Prop  
1..16, 16  
1..1023  
an output.  
See also  
Appendix B.2  
This  
over-writes the  
Data_Type with a numerical  
value for the Data_Type. e.g.  
Analog Value = 2  
This over-writes the Property  
with a numerical value for the  
property. e.g. Present Value  
= 85  
1..4194303  
4.5.3.  
Timing Parameters  
Column Title  
Scan_Interval*  
Function  
Rate at which data is polled  
Legal Values  
0-32000, 2s  
9 Refer to Appendix A.1 for further information.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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Page 12 of 24  
5.  
Configuring the FieldServer as a BACnet MSTP Server  
For a detailed discussion on FieldServer configuration, please refer to the FieldServer Configuration  
Manual. The information that follows describes how to expand upon the factory defaults provided in the  
configuration files included with the FieldServer (See “.csv” sample files provided with the FieldServer).  
This section documents and describes the parameters necessary for configuring the FieldServer to  
communicate with a BACnet MSTP Client.  
The configuration file tells the FieldServer about its interfaces, and the routing of data required. In order to  
enable the FieldServer for BACnet MSTP communications, the driver independent FieldServer buffers  
need to be declared in the “Data Arrays” section, the FieldServer virtual node(s) needs to be declared in  
the “Server Side Nodes” section, and the data to be provided to the clients needs to be mapped in the  
“Server Side Map Descriptors” section. Details on how to do this can be found below.  
Note that in the tables, * indicates an optional parameter, with the bold legal value being the default.  
5.1.  
Driver Specific FieldServer Parameters  
Section Title  
Bridge  
Column Title  
Function  
FieldServer name  
Legal Values  
Title  
Text  
Specify a unique network number  
if there are multiple virtual Server  
nodes.  
1-255  
5
Network_Number*  
Example  
// FieldServer Driver specific parameters  
Bridge  
Title,  
Network_Number  
Bacnet Server,  
6
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
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Page 13 of 24  
5.2.  
Server Side Connection Descriptors  
Section Title  
Connections  
Column Title  
Function  
Specify which port the device is connected to the  
FieldServer  
Specify baud rate  
Specify parity  
Specify data bits  
Specify stop bits  
Specify protocol used  
Legal Values  
P1-P810, R1-R211  
9600, 38400, 7680012  
None, Odd, Even  
7, 8  
Port  
Baud  
Parity*  
Data_Bits*  
Stop_Bits*  
Protocol  
1, 2  
BACnet_MSTP  
Specify if the connection must be in Master_Mode or MSTP_Master_Mode  
Connection_Type  
in Slave_Mode  
MSTP_Slave_Mode  
Specify the highest possible MAC_Address that exists  
on the MSTP network.  
Only applicable for  
Max_Master*  
1-127  
MSTP_Master Mode connections. (See also section  
4.7)13  
Specify the maximum number of information frames  
the connection may send before it must pass the  
token. Only applicable for MSTP_Master Mode  
connections. 13  
Max_Info_Frames*  
1-65535  
Example  
//    Server Side Connections  
Connections  
Port,  
R1,  
Baud,  
38400,  
Parity,  
None,  
Data_Bits,  
8,  
Stop_Bits,  
1,  
Protocol,  
BACnet_MSTP,  
5.3.  
Server Side Node Descriptors14  
Section Title  
Nodes  
Column Title  
Function  
Legal Values  
Up  
to  
32  
alphanumeric  
Node_Name  
Provide name for node  
characters15  
1 - 4194303  
BACnet_MSTP  
Node_ID  
Protocol  
Node ID  
Specify protocol used  
10 P1 to P8 will require the optional RS-485 converter (Part # 4301-00)  
11  
Not all ports shown are necessarily supported by the hardware. Consult the appropriate Instruction  
manual for details of the ports available on specific hardware.  
12 76800 baud is supported on the X30, X25 and ProtoCessor  
13  
For server configurations the Max_Master and Max_Info_Frames parameters (or properties) can be  
overridden from a BACnet Client by using the “Write Property” command. Note that when the FieldServer  
is restarted, the default values as specified in the configuration file will be applied  
14  
Only one Server Nodes may be defined for each connection. For information on support for multiple  
virtual server nodes on a single connection please contact the Sales Department."  
15 For HMI systems, this name will appear as the object name  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
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Page 14 of 24  
Example  
// Server Side Nodes  
Nodes  
Node_Name,  
Virtual_BCU_11,  
16  
Node_ID,  
11,  
Protocol  
BACnet_MSTP  
16 Note that adapter is not declared in the Server Side Nodes  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
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Page 15 of 24  
5.4.  
5.4.1.  
Server Side Map Descriptors  
FieldServer Specific Map Descriptor Parameters  
Column Title  
Function  
Legal Values  
Map_Descriptor_Name Name of this Map Descriptor  
Name of Data Array where  
Up to 32 alphanumeric characters.  
One of the Data Array names from  
“Data Array” section  
Data_Array_Name  
data is to be stored in the  
FieldServer  
0
to Data_Array_Length-1 as  
Data_Array_Offset  
Function  
Starting location in Data Array  
specified in “Data_Array” section  
Function of  
Descriptor  
Server  
Map  
Server  
5.4.2.  
Driver Specific Map Descriptor Parameters  
Column Title  
Function  
Legal Values  
One of the node names  
specified in “Server Node  
Descriptor” above  
Node_Name  
Name of FieldServer Node  
AI, AO, AV, BI, BV, MI, MO,  
Data_Type  
Data type in BCU  
MV17  
Object_Instance  
Units  
Address of the object  
The object units  
0, 1, 2, 3, …  
Appendix 1  
Data_Array_Low_Scale*  
Data_Array_High_Scale*  
Scaling zero in Data Array  
Scaling max in Data Array  
-32767 to 32767, 0  
-32767 to 32767, 100  
Scaling zero in Connected  
Node  
Scaling max in Connected  
Node  
Specify the Active Text  
property of the Object 18  
Specify the Inactive Text  
Node_Low_Scale*  
Node_High_Scale*  
Active_Text  
-32767 to 32767, 0  
-32767 to 32767, 100  
Any legal BACnet ASCII string  
Inactive_Text  
property of the Object (See Any legal BACnet ASCII string  
note12)  
Specify  
the  
startup  
Relinquish_Default  
Property  
Relinquish_Default  
Any legal BACnet ASCII string  
1..1023  
value for this Object (See  
note12)  
This  
over-writes  
the  
Data_Type with a numerical  
value for the Data_Type. e.g.  
Analog Value = 2  
This over-writes the Property  
with a numerical value for the  
property. e.g. Present Value =  
85  
Custom_Type  
Custom_Prop  
1..4194303  
17 Refer to Appendix A.1 for further information.  
18 See the BACnet DFS to determine if a particular object supports this property  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
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Appendix A. Driver Notes  
Page 17 of 24  
Appendix A.1.  
Data_Type Legal Values – Abbreviation Descriptions  
AI  
Analog_Input  
AO Analog_Output  
AV Analog_Value  
BI  
BV Binary_Value  
MI  
Multi_State_Input  
Binary_Input  
MO Multi_State_Output  
MV Multi_State_Value  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
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Appendix B. Advanced Topics  
Page 18 of 24  
Appendix B.1.  
BACnet Object Names  
When an external BACnet Client builds a list of Object Names, the BACnet Server Map Descriptor  
name determines the BACnet Object Name. If the Map Descriptor length is greater than 1, then the  
Object Name will be suffixed with the index into the Map Descriptor. For example, if the Map  
Descriptor name is SMD_AI_01 and the length 3, then the Object Names will be SMD_AI_01[0],  
SMD_AI_01[1] and SMD_AI_01[2].  
Appendix B.2.  
BACnet Priority Arrays  
FieldServer implementation of BACnet priority Arrays  
When BACnet Output objects are written to the Server side of the FieldServer, an associated write  
priority is given to each write value. When the FieldServer receives the write value, it stores it to the  
Map Descriptor Priority Array Table at the specified priority. The Priority Array Table is then scanned  
and the value with the highest priority is stored to the Data Array location specified by the Map  
Descriptor.  
When a Write “Relinquished” command is received, the value is removed from the Priority Array  
Table and the next highest value from the Priority Array Table is stored to the Data Array.  
If all values have been “Relinquished” from the Priority Array Table, then the Map Descriptors  
“Relinquish Default” value will be stored to the Data Array.  
Accessing Priority Array information  
The Priority Array table and its “In_Use” (or Not Relinquished) state are stored internally to every Map  
Descriptor, and cannot be accessed directly. If the following data arrays are specified, however, they  
will maintain an exact copy of the Priority Array Table for the Map Descriptor. Thus the Priority Array  
Table can be accessed.  
Section Title  
Map_Descriptors  
Column Title  
Function  
Legal Values  
Name of Data Array where the Priority Array Table will  
be stored. Location 0 is the Relinquish Default value  
and locations 1 to 16 the different entries of the Priority  
Array Table.  
Up  
to  
16  
DA_Pri_Array  
alphanumeric  
characters  
DA_Pri_Array_Offset  
DA_Pri_In_Use  
Starting location in Data Array.  
Name of Data Array that indicates if a particular  
1-65535 (17)  
Priority Values is in use. Location 0 indicate if the Up  
to  
16  
Relinquish Default has been set and locations 1 to 16 alphanumeric  
indicate if the index is in use (1), or if it has been characters  
Relinquished (0).  
DA_Pri_In_Use_Offset Starting location in Data Array.  
1-65535 (17)  
Appendix B.3.  
Limitations of the BACnet Read_Property_Multiple service.  
The BACnet PTP client driver can read multiple BACnet objects using the Read_Property_Multiple  
service under the following conditions:  
The number of objects to be read must not exceed 29.  
No gaps must exist in the range of object to be read.  
The Map Descriptor function must be of the Read type. (e.g. Rdbc)  
The Map Descriptor property must be Present Value.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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FS-8700-73 BACnet MSTP Driver Manual  
Appendix C. Troubleshooting Tips  
Page 20 of 24  
Appendix C.1.  
Debugging a BACnet connection: Hints and tips  
Disconnect the FieldServer from the BACnet network when transferring images to the BCU.  
If duplicate object instances are accidentally configured in the FieldServer, the second call of the  
instance will overwrite the first one. This may cause a BACnet Object to be “lost.”  
If “Virtual_BCU_…” is not being indicated as the device description for the FieldServer on the  
BACnet SCADA system, then the FieldServer is not communicating with the SCADA system. If  
the present value’s name is being indicated, but the present value shows question marks, then it  
is most likely that the Client side of the FieldServer is not communicating.  
When new points are added to the FieldServer it is important to restart the Summit Workstation or  
BCU, otherwise these new points may not be seen by the FieldServer.  
Polling BACnet addresses that are not configured for Lieberts systems may cause the connection  
to fail in older versions of Lieberts. Please contact your Lieberts supplier for more information.  
When a BACnet_MSTP connection is configured as a server, it is better to use a connection_type  
MSTP_Slave_Node. The only time when a server connection must be a Master_Node is when  
alarming has been established on the FieldServer.  
Extra memory is required to store Map Descriptors that have the active/inactive text parameters  
specified. If the defaults are appropriate, do not specify these parameters. This will save memory  
and allow more Map Descriptors to be created.  
The FieldServer MAC_Address is configured using the System_Node_ID field (See section 4.2)  
This MAC_Address is used on the data_link (or physical) layer as the source or destination  
addresses. See section 9.1.1.2 of the BACnet ANSI/ASHREA standard for more information.  
The MAC_Address is not to be confused with the Node_ID setting (Section 4.4) that specifies the  
BACnet device object instance.  
When designing the MSTP network with multiple Master_Node devices, allocate the  
MAC_Address settings on the different devices starting at 1. This will allow you to specify a small  
Max_Master parameter and hence will improve overall network performance.  
When a FieldServer/ProtoCessor is configured to support MSTP virtual server nodes the firmware  
achieves this by implementing a virtual router and thus a network number is required so that it  
can expose its nodes to external devices as belonging to a specific network. (The default is  
network 5 if not specified). This network number is defined on the bridge descriptor as  
Network_Number. It must be unique for a site. Refer also to Section 5.1, Section 4.4 and  
Appendix A.1.  
McQuay Units are shipped with a default Device instance of the last 6 digits of the McQuay  
Serial number.  
Trane Specific Tips  
When new points are added to the FieldServer it is important to restart Summit Workstation or  
BCU, otherwise these new points may not be seen by the FieldServer.  
Disconnect the FieldServer from the BACnet network when transferring images to the BCU  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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FS-8700-73 BACnet MSTP Driver Manual  
Page 21 of 24  
Appendix C.2.  
Stat  
BACnet Specific Statistics  
Description  
Resolution  
It is normal to receive a few link control  
messages. If the number is higher than the  
transmit/receive messages, however, there  
A “who-is” link control message  
was sent or received.  
Link Control  
may  
be  
a
problem  
with  
lost  
communications..  
This is not an error. BACnet clients often  
poll all properties of a particular object to  
determine which properties are supported.  
Unsupported  
Properties  
A
request for an unsupported  
property was received.  
Data was requested but the  
response would have exceeded the This is not an error - the BACnet client will  
maximum size of the APDU and use a different method to read data from  
could not be sent using an un- the FieldServer.  
Segmentation  
Not Supported  
segmented message.  
Invoke ID of a reply did not match You should not see this message. It  
Sequence Error  
the Invoke ID of the poll.  
normally indicates a configuration error.  
This typically happens when trying to write  
to an Input Object that is not Out-Of-  
Service. It is not possible to write to Input  
Objects.  
Write  
Access  
A write to an object was denied.  
Denied  
This may be a problem on the Client  
system. Consult the PIC statement to  
determine what services are supported.  
Exception  
Errors  
A BACnet Service was denied  
because it is not supported  
Appendix A.1.  
Network Number  
If there are multiple FieldServers or third party devices on a BACnet Network each with multiple  
Server nodes a unique network number must be assigned to each device. This will ensure  
communication between the BACnet Client and all Servers.  
For MSTP devices the network number is provided by the router.  
A consequence of this is that when you configure a MSTP client you must know not only the Node_ID  
of the server node but you need to know the network number. These are specified on the node  
descriptor for client applications as Node_ID and Network_Number. If the network number is not  
specified then the node is assumed to exist on the local segment.  
Another consequence of this is that the network number is not relevant for server configurations.  
The network number is a 16 bit positive number. To override the FieldServer’s default network  
number 5, refer to Section 5.1  
Appendix C.3.  
Corporation.  
Known problems with third party devices - Automated Logic  
When an ALC module is powered up, and it does not detect valid BACnet/MSTP traffic on its MSTP  
port, then the module goes into a terminal mode and MSTP communications will never happen.  
When connecting the FieldServer to an ALC BACnet/MSTP module, always start the FieldServer first.  
Wait until the RUN Led is flashing on the FieldServer before powering up the MSTP module.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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FS-8700-73 BACnet MSTP Driver Manual  
Appendix D. Units  
Page 22 of 24  
Variation 3  
Unit  
Variation 1  
Variation 2  
Amperes  
Amps  
A
Bars  
BTUs  
BTUs-per-hour  
btus-per-pound  
btus-per-pound-dry-air  
centimeters  
centimeters-of-mercury  
centimeters-of-water  
cubic-feet  
cubic-feet-per-minute  
cubic-feet-per-seconds  
cubic-meters  
cubic-meters-per-hour  
cubic-meters-per-seconds  
Currency1  
Currency2  
Currency3  
Currency4  
Currency5  
Currency6  
Currency7  
Currency8  
Currency9  
Currency10  
cycles-per-hour  
cycles-per-minute  
days  
degrees-angular  
Degrees-Celsius  
degrees-celsius-per-hour  
degrees-celsius-per-minute  
Degrees-days-Celsius  
Degrees-days-Fahrenheit  
Degrees-Fahrenheit  
degrees-fahrenheit-per-hour  
degrees-fahrenheit-per-minute  
Degrees-Kelvin  
degrees-phase  
delta-degrees-fahrenheit  
delta-degrees-kelvin  
feet  
Deg-C  
Deg_C  
Deg-F  
Deg-K  
Deg_F  
Deg_K  
feet-per-minute  
feet-per-second  
foot-candles  
grams-water-per-kg-dry-air  
hectopascals  
Hertz  
Hz  
Horsepower  
HP  
hours  
imperial-gallons  
imperial-gallons-per-min  
inches  
inches-of-mercury  
inches-of-water  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
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FS-8700-73 BACnet MSTP Driver Manual  
Page 23 of 24  
Variation 3  
Unit  
Variation 1  
Variation 2  
Joules  
joules-per-degree-kelvin  
joules-per-kilogram-degree-kelvin  
joules-per-kilogram-dry-air  
Kilograms  
Kg  
kilograms-per-hour  
kilograms-per-minute  
kilograms-per-second  
Kilohertz  
KHz  
kilohms  
Kilojoules  
kilojoules-per-kilogram  
kilometers-per-hour  
Kilopascals  
kilovolt-amperes  
kilovolt-amperes-reactive  
kilovolts  
kilovolt-amps  
KVAR  
KVA  
kilowatt-hour-per-square-foot  
kilowatt-hour-per-square-meter  
kilowatt-hours  
kilowatts  
KWh  
KWh  
liters  
liters-per-hour  
liters-per-minute  
liters-per-second  
lumens  
luxes  
Megahertz  
MHz  
megajoules  
megajoules-per-square-foot  
megajoules-per-square-meter  
megavolt-amperes  
Megavolt-amperes-reactive  
megavolts  
megavolt-amps  
MVAR  
megawatts  
MW  
megohms  
meters  
meters-per-second  
miles-per-hour  
milliamperes  
milliamps  
millibars  
millimeters  
millimeters-of-mercury  
Millivolts  
Milliwatts  
minutes  
months  
No-Units  
No Units  
No_Units  
None  
ohms  
parts-per-billion  
parts-per-million  
Pascals  
Percent  
percent-obscuration-per-foot  
percent-obscuration-per-meter  
percent-per-second  
percent-relative-humidity  
Per-hour  
% RH  
Percent RH  
Percent RH  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
Download from Www.Somanuals.com. All Manuals Search And Download.  
FS-8700-73 BACnet MSTP Driver Manual  
Page 24 of 24  
Variation 3  
Unit  
Variation 1  
Variation 2  
per-minute  
per-second  
pounds-force-per-square-inch  
Pounds-mass  
PSI  
pounds-force-per-sq-inch  
pounds-mass-per-hour  
pounds-mass-per-minute  
pounds-mass-per-second  
Power-Factor  
PF  
psi-per-degrees-fahrenheit  
radians  
revolutions-per-minute  
seconds  
Secs  
S
square-centimeters  
square-feet  
square-inches  
square-meters  
Therms  
ton-hours  
Tons  
Tons-refrigeration  
US-gallons  
us-gallons-per-minute  
Volt-Amperes  
volt-amperes-reactive  
Volts  
watt-hours  
Gallons  
GPM  
Volt-Amps  
VAR  
Voltage  
Wh  
VA  
Watts  
W
watts-per-square-foot  
watts-per-square-meter  
watts-per-square-meter-degrees-kelvin  
weeks  
years  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: [email protected]  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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