FieldServer FS-8700-73 User manual

-
A Sierra Monitor Company
APPLICABILITY & EFFECTIVITY
Effective for all systems manufactured after August 2 8
Driver Manual
(Supplement to the FieldServer Instruction Manual)
FS-87 -73 BACnet MSTP - Serial
Driver Version:
1.
Document Revision: 25

FS-87 -73 BACnet MSTP Driver Manual Table of Contents
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
TABLE OF CONTENTS
1. BACNET MSTP DESCRIPTION ..................................................................................... 3
2. DRIVER SCOPE OF SUPPLY ........................................................................................ 4
2.1. Supplie by Fiel Server Technologies for this river.................................................. 4
2.2. Provi e by the Supplier of 3
r
Party Equipment ........................................................ 4
2.2.1. Required 3
rd
Party Hardware .................................................................................. 4
2.2.2. Optional Items ........................................................................................................ 4
3. HARDWARE CONNECTIONS........................................................................................ 5
3.1. Har ware connection Tips/Hints ................................................................................ 6
4. CONFIGURING THE FIELDSERVER AS A BACNET MSTP CLIENT............................ 7
4.1. Data Arrays/Descriptors............................................................................................. 7
4.2. Setting the Fiel Server No e_ID................................................................................ 7
4.3. Client Si e Connection Descriptions .......................................................................... 8
4.4. Client Si e No e Descriptors ..................................................................................... 9
4.5. Client Si e Map Descriptors......................................................................................10
4.5.1. FieldServer Related ap Descriptor Parameters...................................................10
4.5.2. Driver Related ap Descriptor Parameters............................................................10
4.5.3. Timing Parameters ................................................................................................10
4.5.4. ap Descriptor Example........................................................................................11
5. CONFIGURING THE FIELDSERVER AS A BACNET MSTP SERVER.........................12
5.1. Driver Specific Fiel Server Parameters ....................................................................12
5.2. Server Si e Connection Descriptors .........................................................................13
5.3. Server Si e No e Descriptors...................................................................................13
5.4. Server Si e Map Descriptors ....................................................................................15
5.4.1. FieldServer Specific ap Descriptor Parameters...................................................15
5.4.2. Driver Specific ap Descriptor Parameters ...........................................................15
5.4.3. ap Descriptor Example........................................................................................16
APPENDIX A. DRIVER NOTES.............................................................................................17
Appen ix A.1. Data_Type Legal Values – Abbreviation Descriptions..................................17
APPENDIX B. ADVANCED TOPICS .....................................................................................18
Appen ix B.1. BACnet Object Names.................................................................................18
Appen ix B.2. BACnet Priority Arrays .................................................................................18
Appen ix B.3. Limitations of the BACnet Rea _Property_Multiple service..........................18
Appen ix B.4. BACnet State Text Preloa ..........................................................................19
APPENDIX C. TROUBLESHOOTING TIPS ..........................................................................2
Appen ix C.1. Debugging a BACnet connection: Hints an tips.........................................20
Appen ix C.2. BACnet Specific Statistics............................................................................21
Appen ix A.1. Network number...........................................................................................21
Appen ix C.3. Known problems with thir party evices - Automate Logic Corporation. ...21
APPENDIX D. UNITS ............................................................................................................22

FS-87 -73 BACnet MSTP Driver Manual Page 3 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
1. BACnet MSTP Description
The BACnet Master-Slave/Token-Passing (MSTP) river implements a ata link protocol that uses the
services of the RS-485 physical layer. See the Fiel Server BACnet PIC statement for the level of
conformance that this river implements.
Max Nodes Supported
FieldServer Mode Nodes Comments
Client 1
Server 32

FS-87 -73 BACnet MSTP Driver Manual Page 4 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
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 3
rd
Party Equipment
2.2.1. Required 3
rd
Party Hardware
Part # Description
Buil ing control unit (BCU)
1
BACnet client such as a Trane Tracer Summit workstation
2
2.2.2. Optional Items
PART # Vendor/Manufacturer Description
FS-4301-00 Fiel Server RS-232 to RS-485 converter
1
If Fiel Server use as BACnet Client.
2
If Fiel Server use as BACnet Server

FS-87 -73 BACnet MSTP Driver Manual Page 5 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
3. Hardware Connections
The Fiel Server is connecte to the BACnet MSTP as shown in connection rawing.
Configure the BACnet MSTP accor ing to manufacturer’s instructions
DATE: 5/26/ 6
BY: MC
(408)-262-2299
BASE NAME:
FILE NAME: 87 -73 .VSD
FIELDSERVER
BACNET MSTP
CONNECTION DIAGRAM
Fiel Server
+-Gn
Server 1
+-Gn
Server 1
+-Gn
Server n
+-Gn
Client
+-Gn
Fiel Server
+-Gn
Server 2
+-Gn
Server n
+-Gn
Fiel Server as a BACnet MSTP Client
Fiel Server as a BACnet MSTP Server

FS-87 -73 BACnet MSTP Driver Manual Page 6 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
3.1. Hardware connection Tips/Hints
Follow stan ar RS-485 2-wire gui elines for installation. See connection iagram below.

FS-87 -73 BACnet MSTP Driver Manual Page 7 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
4. Configuring the FieldServer as a BACnet MSTP Client
For a etaile iscussion on Fiel Server configuration, please refer to the Fiel Server Configuration
Manual. The information that follows escribes how to expan upon the factory efaults provi e in the
configuration files inclu e with the Fiel Server (See “.csv” sample files provi e with the Fiel Server).
This section ocuments an escribes the parameters necessary for configuring the Fiel Server to
communicate with a BACnet MSTP Server.
4.1. Data Arrays/Descriptors
The configuration file tells the Fiel Server about its interfaces, an the routing of ata require . In
or er to enable the Fiel Server for BACnet MSTP communications, the river in epen ent
Fiel Server buffers nee to be eclare in the “Data Arrays” section, the estination evice
a resses nee to be eclare in the “Client Si e No es” section, an the ata require from the
servers nee s to be mappe in the “Client Si e Map Descriptors” section. Details on how to o this
can be foun below.
Note that in the tables, * in icates an optional parameter, with the bol legal value being the efault.
Section Title
Data_Arrays
Column Title Function Legal Values
Data_Array_Name Provi e name for Data Array Up to 15 alphanumeric
characters
Data_Format Provi es ata format
Float, Bit, Uint16, Uint32,
Sint16, Sint32, Packe _Bit,
Byte, Packe _Byte,
Swappe _Byte
Data_Array_Length Number of Data Objects 1-10,000
Example
// Data Arrays
Data_Arrays
Data_Array_Name, Data_Array_Format, Data_Array_Length
DA_AI_01, Float, 200
DA_AO_01, Float, 200
DA_DI_01, Bit, 200
DA_DO_01, Bit, 200
4.2. Setting the FieldServer Node_ID
Section Title
Fiel Server
Column Title Function Legal Values
System_No e_ID Specify the MAC_A ress of the
Fiel Server. (See Appen ix C.1) 1-254
Example
// Fiel Server
Fiel Server
Title, System_No e_ID
BACnet_MSTP, 11

FS-87 -73 BACnet MSTP Driver Manual Page 8 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
4.3. Client Side Connection Descriptions
Section Title
Connections
Column Title Function Legal Values
Port Specify which port the evice is connecte to the
Fiel Server P1-P8
3
, R1-R2
4
Bau Specify bau rate 96 , 38400,
76800
5
Parity* Specify parity O , Even, None
Data_Bits* Specify ata bits 7, 8
Stop_Bits* Specify stop bits 1,2
Protocol Specify protocol use BACnet_MSTP
Poll Delay* Time between internal polls 0-32000s, 1s
Timeout Application logger timeout 30s
Max_Master** Specify the highest possible MAC_A ress that exists on
the MSTP network. (See Appen ix C.1) 1-127
Max_Info_Frames
Specify the maximum number of information frames the
connection may sen before it must pass the token. 1-65535
Example
// Client Si e Connections
Connections
Port, Bau , Parity, Data_Bits, Stop_Bits, Protocol, Poll_Delay Timeout
R1, 38400, None, 8, 1, BACnet_MSTP, 0.100s 30s
3
P
1
to P
8
will require the optional RS-485 converter (Part # 4301-00)
4
Not all ports shown are necessarily supporte by the har ware. Consult the appropriate Instruction
manual for etails of the ports available on specific har ware.
5
76800 bau is supporte on the X30, X25 an ProtoCessor

FS-87 -73 BACnet MSTP Driver Manual Page 9 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
4.4. Client Side Node Descriptors
Section Title
No es
Column Title Function Legal Values
No e_Name Provi e name for no e Up to 32 alphanumeric
characters
No e_ID Specify the BACnet Device object instance.
6
1 - 4194303
Protocol Specify protocol use BACnet_MSTP
Port Specify port P1-P8
7
, R1-R2
8
MAC_A ress MAC_A ress of the physical server no e.
6
1-127 (for Master
No es)
1-254 (for Slave
No es)
Network_Number*
Use this parameter if the remote MSTP server evice
is on another BACnet network connecte via a router.
1,2,3.... 16 bit positive
numbers.
5
Example
// Client Si e No es
No es
No e_Name, No e_ID, Protocol, Port
BCU_1, 1, BACnet_MSTP, R1
6
Either No e_ID OR MAC_A ress must be specifie . If the Server No e supports Who-Is an I-Am
then it is better to use the No e_ID parameter.
7
P
1
to P
8
will require the optional RS-485 converter (Part # 4301-00)
8
Not all ports shown are necessarily supporte by the har ware. Consult the appropriate Instruction
manual for etails of the ports available on specific har ware.

FS-87 -73 BACnet MSTP Driver Manual Page 1 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
4.5. Client Side Map Descriptors
4.5.1. FieldServer Related Map Descriptor Parameters
Column Title Function Legal Values
Map_Descriptor_Name Name of this Map
Descriptor
Up to 32 alphanumeric
characters
Data_Array_Name
Name of Data Array
where ata is to be store
in the Fiel Server
One of the Data Array names
from “Data_Array” section
Data_Array_Offset Starting location in Data
Array
0 to Data_Array_Length-1 as
specifie in “Data_Array”
section
Function Function of Client Map
Descriptor R bc, Wrbc, Wrbx
4.5.2. Driver Related Map Descriptor Parameters
Column Title Function Legal Values
No e_Name Name of No e to fetch ata
from
One of the no e names
specifie in “Client No e
Descriptor” above
Data_Type Data type in Fiel Server AI, AO, AV, BI, BV, MI, MO,
MV
9
Object_Instance A ress of object 0, 1, 2, 3, …
Property* The BACnet property to be
rea Present_Value
Data_Array_Low_Scale* Scaling zero in Data Array -32767 to 32767,
Data_Array_High_Scale* Scaling max in Data Array -32767 to 32767, 1
No e_Low_Scale* Scaling zero in Connecte
No e -32767 to 32767,
No e_High_Scale* Scaling max in Connecte
No e -32767 to 32767, 1
Write_Priority
Allows the river to specify
the write priority use to write
an output. See also
Appen ix B.2
1..16, 16
Custom_Type
This over-writes the
Data_Type with a numerical
value for the Data_Type. e.g.
Analog Value = 2
1..1023
Custom_Prop
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 Function Legal Values
Scan_Interval* Rate at which ata is polle 0-32000, 2s
9
Refer to Appen ix A.1 for further information.

FS-87 -73 BACnet MSTP Driver Manual Page 11 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
4.5.4. Map Descriptor Example.
// Client Si e Map Descriptors Map_Descriptors Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, No e_Name, Data_Type, Object_Instance Property, Scan_Interval CMD_AI_01, DA_AI_01, 0, RDBC, BCU_1, AI, 1, Present_Value, 20.000s CMD_AI_02, DA_AI_01, 1, RDBC, BCU_1, AI, 2, Present_Value, 20.000s CMD_AI_03, DA_AI_01, 2, RDBC, BCU_1, AI, 3, Present_Value, 20.000s CMD_AO_01, DA_AO_01, 0, RDBC, BCU_1, AO, 1, Present_Value, 30.000s CMD_AO_02, DA_AO_01, 1, RDBC, BCU_1, AO, 2, Present_Value, 30.000s CMD_AO_03, DA_AO_01, 2, RDBC, BCU_1, AO, 3, Present_Value, 30.000s Map_Descriptors Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, No e_Name, Data_Type, Object_Instance, Property, Scan_Interval CMD_DI_01, DA_DI_01, 0, RDBC, BCU_1, DI, 1, Present_Value, 15.000s CMD_DI_02, DA_DI_01, 1, RDBC, BCU_1, DI, 2, Present_Value, 15.000s CMD_DI_03, DA_DI_01, 2, RDBC, BCU_1, DI, 3, Present_Value, 15.000s CMD_DO_01, DA_DO_01, 0, RDBC, BCU_1, DO, 1, Present_Value, 30.000s CMD_DO_02, DA_DO_01, 1, RDBC, BCU_1, DO, 2, Present_Value, 30.000s CMD_DO_03, DA_DO_01, 2, RDBC, BCU_1, DO, 3, Present_Value, 30.000s

FS-87 -73 BACnet MSTP Driver Manual Page 12 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
5. Configuring the FieldServer as a BACnet MSTP Server
For a etaile iscussion on Fiel Server configuration, please refer to the Fiel Server Configuration
Manual. The information that follows escribes how to expan upon the factory efaults provi e in the
configuration files inclu e with the Fiel Server (See “.csv” sample files provi e with the Fiel Server).
This section ocuments an escribes the parameters necessary for configuring the Fiel Server to
communicate with a BACnet MSTP Client.
The configuration file tells the Fiel Server about its interfaces, an the routing of ata require . In or er to
enable the Fiel Server for BACnet MSTP communications, the river in epen ent Fiel Server buffers
nee to be eclare in the “Data Arrays” section, the Fiel Server virtual no e(s) nee s to be eclare in
the “Server Si e No es” section, an the ata to be provi e to the clients nee s to be mappe in the
“Server Si e Map Descriptors” section. Details on how to o this can be foun below.
Note that in the tables, * in icates an optional parameter, with the bol legal value being the efault.
5.1. Driver Specific FieldServer Parameters
Section Title
Bri ge
Column Title Function Legal Values
Title Fiel Server name Text
Network_Number*
Specify a unique network number
if there are multiple virtual Server
no es.
1-255
5
Example
// Fiel Server Driver specific parameters
Bri ge
Title, Network_Number
Bacnet Server, 6

FS-87 -73 BACnet MSTP Driver Manual Page 13 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
5.2. Server Side Connection Descriptors
Section Title
Connections
Column Title Function Legal Values
Port Specify which port the evice is connecte to the
Fiel Server P1-P8
10
, R1-R2
11
Bau Specify bau rate 96 , 38400, 76800
12
Parity* Specify parity None, O , Even
Data_Bits* Specify ata bits 7, 8
Stop_Bits* Specify stop bits 1, 2
Protocol Specify protocol use BACnet_MSTP
Connection_Type Specify if the connection must be in Master_Mo e or
in Slave_Mo e
MSTP_Master_Mode
MSTP_Slave_Mo e
Max_Master*
Specify the highest possible MAC_A ress that exists
on the MSTP network. Only applicable for
MSTP_Master Mo e connections. (See also section
4.7)
13
1-127
Max_Info_Frames*
Specify the maximum number of information frames
the connection may sen before it must pass the
token. Only applicable for MSTP_Master Mo e
connections.
13
1-65535
Example
// Server Si e Connections
Connections
Port, Bau , Parity, Data_Bits, Stop_Bits, Protocol,
R1, 38400, None, 8, 1, BACnet_MSTP,
5.3. Server Side Node Descriptors
14
Section Title
No es
Column Title Function Legal Values
No e_Name Provi e name for no e Up to 32 alphanumeric
characters
15
No e_ID No e ID 1 - 4194303
Protocol Specify protocol use BACnet_MSTP
10
P
1
to P
8
will require the optional RS-485 converter (Part # 4301-00)
11
Not all ports shown are necessarily supporte by the har ware. Consult the appropriate Instruction
manual for etails of the ports available on specific har ware.
12
76800 bau is supporte on the X30, X25 an ProtoCessor
13
For server configurations the Max_Master an Max_Info_Frames parameters (or properties) can be
overri en from a BACnet Client by using the “Write Property” comman . Note that when the Fiel Server
is restarte , the efault values as specifie in the configuration file will be applie
14
Only one Server No es may be efine for each connection. For information on support for multiple
virtual server no es on a single connection please contact the Sales Department."
15
For HMI systems, this name will appear as the object name

FS-87 -73 BACnet MSTP Driver Manual Page 14 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
Example
// Server Si e No es
No es
No e_Name, No e_ID, Protocol
16
Virtual_BCU_11, 11, BACnet_MSTP
16
Note that a apter is not eclare in the Server Si e No es

FS-87 -73 BACnet MSTP Driver Manual Page 15 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
5.4. Server Side Map Descriptors
5.4.1. FieldServer Specific Map Descriptor Parameters
Column Title Function Legal Values
Map_Descriptor_Name Name of this Map Descriptor Up to 32 alphanumeric characters.
Data_Array_Name
Name of Data Array where
ata is to be store in the
Fiel Server
One of the Data Array names from
“Data Array” section
Data_Array_Offset Starting location in Data Array 0 to Data_Array_Length-1 as
specifie in “Data_Array” section
Function Function of Server Map
Descriptor Server
5.4.2. Driver Specific Map Descriptor Parameters
Column Title Function Legal Values
No e_Name Name of Fiel Server No e
One of the no e names
specifie in “Server No e
Descriptor” above
Data_Type Data type in BCU AI, AO, AV, BI, BV, MI, MO,
MV
17
Object_Instance A ress of the object 0, 1, 2, 3, …
Units The object units Appen ix 1
Data_Array_Low_Scale* Scaling zero in Data Array -32767 to 32767,
Data_Array_High_Scale* Scaling max in Data Array -32767 to 32767, 1
No e_Low_Scale* Scaling zero in Connecte
No e -32767 to 32767,
No e_High_Scale* Scaling max in Connecte
No e -32767 to 32767, 1
Active_Text Specify the Active Text
property of the Object
18
Any legal BACnet ASCII string
Inactive_Text
Specify the Inactive Text
property of the Object (See
note
12
)
Any legal BACnet ASCII string
Relinquish_Default
Specify the startup
Relinquish_Default Property
value for this Object (See
note
12
)
Any legal BACnet ASCII string
Custom_Type
This over-writes the
Data_Type with a numerical
value for the Data_Type. e.g.
Analog Value = 2
1..1023
Custom_Prop
This over-writes the Property
with a numerical value for the
property. e.g. Present Value =
85
1..4194303
17
Refer to Appen ix A.1 for further information.
18
See the BACnet DFS to etermine if a particular object supports this property

FS-87 -73 BACnet MSTP Driver Manual Page 16 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
5.4.3. Map Descriptor Example.
// Client Si e Map Descriptors Map_Descriptors Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, No e_Name, Data_Type Object_Instance, Property, Units, Data_Array_Low_Scale, Data_Array_High_Scale, No e_Low_Scale, No e_High_Scale SMD_AI_01, DA_AI_01, 0, Server, Virtual_BCU_11, AI, 1, Present_Value, Deg_F, 0, 10000, 0, 100 SMD_AI_02, DA_AI_01, 1, Server, Virtual_BCU_11, AI, 2, Present_Value, Deg_F, 0, 10000, 0, 100 SMD_AI_03, DA_AI_01, 2, Server, Virtual_BCU_11, AI, 3, Present_Value, Deg_F, 0, 10000, 0, 100 SMD_AO_01, DA_AO_01, 0, Server, Virtual_BCU_11, AO, 1, Present_Value, %RH, 0, 10000, 0, 100 SMD_AO_02, DA_AO_01, 1, Server, Virtual_BCU_11, AO, 2, Present_Value, %RH, 0, 10000, 0, 100 SMD_AO_03, DA_AO_01, 2, Server, Virtual_BCU_11, AO, 3, Present_Value, %RH, 0, 10000 0, 100 Map_Descriptors Map_Descriptor_Name,
Data_Array_Name,
Data_Array_Offset, Function,
No e_Name, Data_Type,
Object_Instance, Property
SMD_DI_01, DA_DI_01, 0, Server, Virtual_BCU_11,
DI, 1, Present_Value
SMD_DI_02, DA_DI_01, 1, Server, Virtual_BCU_11,
DI, 2, Present_Value
SMD_DI_03, DA_DI_01, 2, Server, Virtual_BCU_11,
DI, 3, Present_Value
SMD_DO_01, DA_DO_01, 0, Server, Virtual_BCU_11,
DO, 1, Present_Value
SMD_DO_02, DA_DO_01, 1, Server, Virtual_BCU_11,
DO, 2, Present_Value
SMD_DO_03, DA_DO_01, 2, Server, Virtual_BCU_11,
DO, 3, Present_Value

FS-87 -73 BACnet MSTP Driver Manual Page 17 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
Appendix A. Driver Notes
Appendix A.1. Data_Type Legal Values – Abbreviation Descriptions
AI Analog_Input
AO Analog_Output
AV Analog_Value
BI Binary_Input
BV Binary_Value
MI Multi_State_Input
MO Multi_State_Output
MV Multi_State_Value

FS-87 -73 BACnet MSTP Driver Manual Page 18 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
Appendix B. Advanced Topics
Appendix B.1. BACnet Object Names
When an external BACnet Client buil s a list of Object Names, the BACnet Server Map Descriptor
name etermines the BACnet Object Name. If the Map Descriptor length is greater than 1, then the
Object Name will be suffixe with the in ex into the Map Descriptor. For example, if the Map
Descriptor name is SMD_AI_01 an the length 3, then the Object Names will be SMD_AI_01[0],
SMD_AI_01[1] an 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 si e of the Fiel Server, an associate write
priority is given to each write value. When the Fiel Server receives the write value, it stores it to the
Map Descriptor Priority Array Table at the specifie priority. The Priority Array Table is then scanne
an the value with the highest priority is store to the Data Array location specifie by the Map
Descriptor.
When a Write “Relinquishe ” comman is receive , the value is remove from the Priority Array
Table an the next highest value from the Priority Array Table is store to the Data Array.
If all values have been “Relinquishe ” from the Priority Array Table, then the Map Descriptors
“Relinquish Default” value will be store to the Data Array.
Accessing Priority Array information
The Priority Array table an its “In_Use” (or Not Relinquishe ) state are store internally to every Map
Descriptor, an cannot be accesse irectly. If the following ata arrays are specifie , however, they
will maintain an exact copy of the Priority Array Table for the Map Descriptor. Thus the Priority Array
Table can be accesse .
Section Title
Map_Descriptors
Column Title Function Legal Values
DA_Pri_Array
Name of Data Array where the Priority Array Table will
be store . Location 0 is the Relinquish Default value
an locations 1 to 16 the ifferent entries of the Priority
Array Table.
Up to 16
alphanumeric
characters
DA_Pri_Array_Offset Starting location in Data Array. 1-65535 (17)
DA_Pri_In_Use
Name of Data Array that in icates if a particular
Priority Values is in use. Location 0 in icate if the
Relinquish Default has been set an locations 1 to 16
in icate if the in ex is in use (1), or if it has been
Relinquishe (0).
Up to 16
alphanumeric
characters
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 river can rea multiple BACnet objects using the Rea _Property_Multiple
service un er the following con itions:
• The number of objects to be rea must not excee 29.
• No gaps must exist in the range of object to be rea .
• The Map Descriptor function must be of the Rea type. (e.g. R bc)
• The Map Descriptor property must be Present Value.

FS-87 -73 BACnet MSTP Driver Manual Page 19 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
Appendix B.4. BACnet State Text Preload
Metho 1 – Using a Single Data Array:
Data_Arrays Data_Array_Name,
Data_Format,
Data_Array_Length
DA_MI_01, UINT16, 100 DA_STATE_TXT, BYTE, 200 Preloa s Data_Array_Name,
Preloa _Data_Value, Preloa _Data_Format,
Preloa _Data_In ex
DA_STATE_TXT, MyState1 MyState2 MyState3 MyState4 MyState5 MyState6, String, 0
Map_Descriptors Map_Descriptor_Name,
Data_Type,
Object_ID,
Function,
Data_Array_Name,
Data_Array_In ex,
No e_Name,
Length,
State_Text_Array
CMD_MI_01, MI, 1 Server DA_MI_01, 0, N1 11, 1, Da_State_Txt Metho 2 – Using an Offset/User Table: //set up a look up table Offset_Table, Offset_Table_Name, Table_String, Table_In ex_Value FIRE_ALRM_TEXT,
SYSTEM READY,
0
FIRE_ALRM_TEXT, ALARM,
1
FIRE_ALRM_TEXT,
MAINTENANCE,
2
FIRE_ALRM_TEXT, OFF-LINE,
3
FIRE_ALRM_TEXT,
IN SERVICE,
4
FIRE_ALRM_TEXT, OTHER,
5
Data_Arrays Data_Array_Name,
Data_Format,
Data_Array_Length
DA_MI_01, UINT16, 100
Map_Descriptors Map_Descriptor_Name,
Data_Type,
Object_ID,
Function,
Data_Array_Name,
Data_Array_In ex,
No e_Name,
Length,
State_Text_Array
CMD_MI_01, MI, 1 Server DA_MI_01, 1, N1 11, 1, Fire_Alrm_Text

FS-87 -73 BACnet MSTP Driver Manual Page 2 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fiel server.com
Tel: [phone] Fax: [phone] Toll Free: [phone] email: support@fiel server.com
Appendix C. Troubleshooting Tips
Appendix C.1. Debugging a BACnet connection: Hints and tips
• Disconnect the Fiel Server from the BACnet network when transferring images to the BCU.
• If uplicate object instances are acci entally configure in the Fiel Server, the secon call of the
instance will overwrite the first one. This may cause a BACnet Object to be “lost.”
• If “Virtual_BCU_…” is not being in icate as the evice escription for the Fiel Server on the
BACnet SCADA system, then the Fiel Server is not communicating with the SCADA system. If
the present value’s name is being in icate , but the present value shows question marks, then it
is most likely that the Client si e of the Fiel Server is not communicating.
• When new points are a e to the Fiel Server it is important to restart the Summit Workstation or
BCU, otherwise these new points may not be seen by the Fiel Server.
• Polling BACnet a resses that are not configure for Lieberts systems may cause the connection
to fail in ol er versions of Lieberts. Please contact your Lieberts supplier for more information.
• When a BACnet_MSTP connection is configure as a server, it is better to use a connection_type
MSTP_Slave_No e. The only time when a server connection must be a Master_No e is when
alarming has been establishe on the Fiel Server.
• Extra memory is require to store Map Descriptors that have the active/inactive text parameters
specifie . If the efaults are appropriate, o not specify these parameters. This will save memory
an allow more Map Descriptors to be create .
• The Fiel Server MAC_A ress is configure using the System_No e_ID fiel (See section 4.2)
This MAC_A ress is use on the ata_link (or physical) layer as the source or estination
a resses. See section 9.1.1.2 of the BACnet ANSI/ASHREA stan ar for more information.
The MAC_A ress is not to be confuse with the No e_ID setting (Section 4.4) that specifies the
BACnet evice object instance.
• When esigning the MSTP network with multiple Master_No e evices, allocate the
MAC_A ress settings on the ifferent evices starting at 1. This will allow you to specify a small
Max_Master parameter an hence will improve overall network performance.
• When a Fiel Server/ProtoCessor is configure to support MSTP virtual server no es the firmware
achieves this by implementing a virtual router an thus a network number is require so that it
can expose its no es to external evices as belonging to a specific network. (The efault is
network 5 if not specifie ). This network number is efine on the bri ge escriptor as
Network_Number. It must be unique for a site. Refer also to Section 5.1, Section 4.4 an
Appen ix A.1.
• McQuay Units are shippe with a efault Device instance of the last 6 igits of the McQuay
Serial number.
• Trane Specific Tips
• When new points are a e to the Fiel Server it is important to restart Summit Workstation or
BCU, otherwise these new points may not be seen by the Fiel Server.
• Disconnect the Fiel Server from the BACnet network when transferring images to the BCU