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115S Serial Expansion I/O for Modbus or WIB-net Applications

I/O for Expanding Applications

The ELPRO 115S series allows end users to readily accommodate changing I/O needs as project specifications evolve. The 115S series can be used with ELPRO transceiver-based I/O, Gateway, Ethernet and Serial products to expand input and output count or act as Modbus slave I/O to connect other field devices. Connected via RS485 and communicating ELPRO WIBNetTM or Modbus protocols, the 115S series is available in three versions of I/O count and multiple 115S products may be daisy-chained to accommodate changing application needs.




Flow meter monitoring, Storage tank monitoring, Pipeline cathodic protection, Pump stop-start, Lighting bank control, Emergency shower notification, Weather station reporting, Bearing condition monitoring, Modbus Slave



  • Provides differing I/O count for expanding applications.

  • Combine units (daisy-chain) to accommodate additional I/O needs.

  • Serial modem expansion I/O for ELPRO transceiver I/O, Gateway and Ethernet Products.

  • Modbus RTU slave I/O expansion capability.

  • Serial I/O multiplexer featuring ELPRO change of state WIBNet™ protocol.



Spotcom Catalog Numbers: 

ELR19                    EL-115S-11-24               I/O = (16)DIO + (4)PI

ELR20                    EL-115S-12-24               I/O = (8)DIO + (4 floating / 8 commoned)AI

ELR21                    EL-115S-13-24               I/O = (8)DIO + (8)AO

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