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© 2022 All rights reserved. Data subject to change without notice.
FCS - Operation Manual
Rev. C | 2022.02
FCS default WAN BACnet® MS/TP (version 1 rev 14), RS-485 communication parameters:
• Baud rate =76,800
• Base address = 270
• MAC address = 100
• Instance ID = 270100 (the Base Address x 1000 + the MAC Address)
• Parity = no parity
• Stop bits = 1
• Data bits = 8
NOTE:
For Modbus® network communications wiring, use 4-conductor, 16 AWG stranded
shielded wire.
As per the requirements of the RS-485 protocol, a termination resistor must be installed
/ enabled on the last device at the end of the network wiring. This includes the Building
Management System (if used).
11.1.1 Set Modbus® ID, Remote Baud Rate and Local Baud Rate
For an FCS Controller with Modbus® WAN output, press Menu and enter passcode “1001” to
enter the Basic menu and select Modbus Setup.
Remote Modbus
®
ID:
Use the + and - buttons to increase or decrease the number
until the correct Remote Modbus
®
ID is displayed, or press the yellow field and use the
keypad to enter the number. Press ENTER to save.
Remote Baud Rate:
Use the + or - to increase or decrease the number or press the yellow
field and use the keypad to choose the correct Remote Baud Rate. Press ENTER to save.
Local Baud Rate:
Use the + or - to increase or decrease the number until the correct
Local Baud Rate is displayed. Press ENTER to save.
Power the FCS off and then on again.