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Alarm Systems
Transducer Range

Ringline 6 Channel Digital Transmitter
Ringline 6 Channel Receiver
Ringline Cat 4 Digital Transmitter
Ringline Earth Leakage Transmitter
Ringline I.S Digital Time Delay Tx
Ringline I.S Dual Channel Digital Transmitter
Ringline I.S Field Powered Receiver
Ringline I.S. 1/2/3 Channel Analogue Transmitters
Ringline I.S. Reader
Ringline I.S. Signal Line System
Ringline IS 2 Channel Receiver - AC
Ringline IS 2 Channel Receiver - DC
Ringline MkII Display
Ringline MkII Display (Ethernet/IP)
Ringline MkII I.S. System
Ringline MkII System
Ringline Modbus Interface
Ringline PLC interface with Tx
Ringline Programmer
Ringline Synchroniser with Modbus
Ringline Temperature Sensors
Ringline Temperature Transmitter
RLCONV - E/Stop & Pre-Start In One

Ringline Modbus Interface

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RLMODBUS is a DIN-Rail mountable communications module that decodes all digital and analog data from the Ringline signal line system system and makes it available to other devices via Modbus RTU communications protocol on RS485 hardware.


  • Simple, robust and functional.
  • DIP switch selectable baud rate (9600 or 19200) for easy installation into existing hardware.
  • DIP switch addressable for Modbus addresses 1 to 15.
  • Status indication for both Modbus and Ringline communications
  • Optical isolated between Modbus and the Ringline field bus.
  • Read only. Cannot interfere with the integrity of the emergency stop system.

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