
© 2022 All rights reserved. Data subject to change without notice.
59
Rev. C | 2022.02
FCS - Operation Manual
11.1.2 Set WAN BACnet® Base Address, MAC Address and Baud Rate
For an FCS Controller with BACnet® WAN output, press Menu and enter passcode “1001” to
enter the Basic menu and select Bacnet Setup.
BACnet Base Addr.:
Use the + and - buttons to increase or decrease the number until the
correct BACnet base address is displayed, or press the yellow field and use the keypad to
enter the number. The FCS factory default base address is 270. Press ENTER to save.
BACnet MAC Addr.:
Use the + or - to increase or decrease the number or press the yellow
field and use the keypad to choose the correct MAC address. The FCS factory default is
100. Press ENTER to save.
BACnet Baud Rate:
Use the + or - to increase or decrease the number until the correct
baud rate is displayed. The FCS factory default baud rate is 76,800. Press ENTER to save.
Power the FCS off and then on again.
11.2 Modbus
®
Holding Registers
The FCS Controller is configured to communicate with a Building Automation System or
Direct Digital Control System on an RS-485 network using Modbus
®
RTU protocol (version
1.1b3, RS-485). In order for communication to be successful between devices, be sure your
network connection is complete, the network termination switches are set appropriately and
all the devices are configured with the same baud rate, character format, etc. Each device will
have its own unique Modbus
®
ID.
If you have specific requirements, have any questions or require clarification about these
holding registers, please contact CETCI for assistance.
11.2.1 Read Coil (Relays, Buzzer, Strobe)
The discrete outputs registers are the present state of the relays, strobe, buzzer and remote
relays. These reflect the alarm condition. They are read only
Alarm Conditions: 0 = Normal (non-active)
1 = alarm (active)