-Modbus Protocol - Slave
-Optional RTU or ASCII Modes
-Selectable Baud Rate
-Default Mode for easy access
-RS485 Address set on "DIP" switch
-Serial Interface (RS232/485) for Omni8/16C Annunciators

Omni8/16C Serial Interface RS232/485 using Modbus protocol. C1423A Used only for full Integral Annunciator variants. For RLU variants use C1423B

The Modbus serial Interface options board allows the annunciator to become a Modbus slave device on RS232 or RS485 communications network.

This enables Omni8/16Cs to receive inputs serially instead of hardwired or for other serial devices to access the hardwired input status via the serial port. 

Up to 15 Omni8/16Cs be multi-dropped on an RS485 port and all data transmitted or acquired serially.

The serial Interface allows the annunciator to be used in a complimentary role with PLCs or SCADA. Using Modbus communication critical alarms can be routed from the SCADA to Annunciator forcing operator intervention as well as external audible and visual indication of alarms. In a similar way a PLC can be offloaded from the task of processing alarms by routing this function to the annunciator.

Parameter Name	Parameter Value
Bus	RS-232, RS-485, Modbus, Modbus RTU
Applications	industrial
Other characteristics	slave