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Unitronics GW-BAC1 User Manual
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Unitronics’s
BACnet Gate
way User Guide
Page
20
of
28
Unitronics
Figure
25
:
Example of TCP/IP card and so
cket initialize
After
the
initial
configuratio
n,
add
the
proper
Modbus
commands
to
read/write
da
ta
using
the
addresses
table
obtained in th
e finish screen of the Un
iBACnet Configurator
.
Figure
26
:
Example of MODBUS Command
19
21
Table of Contents
Default Chapter
1
User Guide
1
Table of Contents
3
1 Introduction
5
GW-BAC1 Gateway
5
Record Identification Data
5
Technical Support
5
2 Interfacing GW-BAC1 to Devices
6
GW-BAC1 Showing Connection Ports
6
Figure 1: Bacnet Board
6
Connecting a Unitronics PLC to the GW-BAC1 Via Modbus RS-485
7
Figure 2: Power and RS-485 Connections
7
2.2.1 Biasing the Modbus RS-485 Network
8
Figure 3: Modbus RS-485 Biasing Switch on the GW-BAC1
8
2.2.2 End of Line Termination Switch for the Modbus RS -485 Port on the GW-BAC1
9
Figure 4: Modbus RS-485 End-Of-Line Termination Switch on the GW-BAC1
9
Bacnet MS/TP Field Devices: Wiring Field Port to RS-485 Network
10
Figure 5: Connection from GW-BAC1 to RS-485 Field Network
10
Figure 6: RS-485 EOL Switch
10
Connecting Power to GW-BAC1
11
Figure 7: Required Current Draw for the GW-BAC1
11
Figure 8: Power Connections
11
3 Creating Configuration File and Configurating the PLC
12
Unibacnet Configurator
12
Figure 9: Tools Menu on Visilogic
12
Figure 10: Tools Menu on Unilogic
12
Figure 11: Bacnet Connection MS/TP Screen
13
Figure 12: Bacnet Connection IP Screen
13
Figure 13: Bacnet Nodes Screen
14
Figure 14: Bacnet Map Descriptors Screen
14
Figure 15: Modbus Connection RTU Screen
15
Figure 16: Modbus Connection IP Screen
15
Figure 17: Finish Screen
16
Figure 18: File Transfer Screen
17
Figure 19: File Menu
17
PLC Configuration Example
18
Figure 20: MODBUS RTU Configuration
18
Figure 21: Example of COM Initialize
18
Figure 22: Example of Modbus Configuration
19
Figure 23: Example of MODBUS TCP/IP Configurator
19
Figure 24: Example of TCP/IP Card and Socket Initialize
19
Figure 25: Example of TCP/IP Card and Socket Initialize
20
Figure 26: Example of MODBUS Command
20
4 Changing the GW-BAC1 IP Address
21
Connect the PC to GW-BAC1 Via the Ethernet Port
21
Figure 27: Ethernet Port Location
21
Figure 28: PC IP Configuration
21
Bacnet/Ip: Setting IP Address for Field Network
22
Figure 29: Changing IP Address Via FST Web GUI
22
Appendix A. Troubleshooting
23
Appendix A.1. Check Wiring and Settings
23
Appendix A.2. Diagnostic Capture
24
Figure 30: Ethernet Port Location
24
Figure 31: Diagnostic Tool - Device Selection
24
Figure 32: Diagnostic Selection
25
Figure 33: Diagnostic Tool - Start Diagnostic
25
Figure 34: Diagnostic Tool -Diagnostic Test Complete
26
Appendix A.3. LED Diagnostics for Modbus RTU Communications between GW-BAC1 and Devices
27
Figure 35: Diagnostic Leds
27
Appendix B. Reference
28
Appendix B.1. Specifications
28
Appendix B.2. Compliance with UL Regulations
28
Figure 36: Specifications
28
4
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Unitronics GW-BAC1 Specifications
General
Brand
Unitronics
Model
GW-BAC1
Category
Gateway
Language
English
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