Redundant fiber DIN rail mount Ethernet networking modules for PLCs and Ethernet field devices

Multi-fault tolerant, Ethernet communications built for industrial applications

The OCR fiber Ethernet networking module is not an IT switch.  The DIN rail mount OCR module is an OT (operational technology) networking module that is built for critical industrial Ethernet applications and networking together Ethernet PLCs.

Industrial applications for Ethernet networking are different from IT applications.  If a networking module fails, it needs to be hot swappable and plug and play, not complicated with command line interface programming; and taking minutes for boot up is not acceptable on the plant floor after power cycle.

An industrial Ethernet module needs to be able to transport multiple industrial Ethernet protocols, at the same time -- for example Ethernet/IP, PROFINET, and Modbus TCP, and have options for other industrial protocols such as ControlNet, Data Highway, IEC 61850, R/IO, GE Genius, RS-232, RS-485, RS-422, CTI, Siemens, Texas Instruments Remote I/O, and Modbus Serial.

And, it needs to be compatible with any vendors PLCs or DCS.

That's exactly what the Phoenix Digital fiber Ethernet networking modules provide, and they are available as DIN rail mount, ControlLogix in-chassis modules and PLC-5 in-chassis modules.

The OCR module is a DIN rail Ethernet module that works with any variation of Ethernet and is compatible with any vendors PLC or DCS.


Built-for control engineers

  • DIN rail mount
  • No command line interface configuration
  • Plug and play, hot swapable
  • 10-second power-up
  • Transports multiple industrial protocols at the same time

Built-for critical networks

  • Redundant fiber between OCR modules
  • Fiber facilitates long distances, eliminates ground loop issues, and impervious to EMI
  • Copper Ethernet to PLCs and field devices
  • 0 second network convergence time if a fiber fails or a module fails

Technical Data

Technical Data
Specifications Fiber Optic Type
Mating Connector
Transmit Launch Power

Receive Sensitivity
Single Mode or Multimode
ST, SC, or LC
-15 dBm (Typical Multimode; -18 dBm (Single Mode)
-32 dBm
Single Mode or Multimode
-15 dBm (Typical Multimode; -18 dBm (Single Mode)
-32 dBm
Protocol Ethernet Speed 10/100 Ethernet (All versions) 10/100/1000 Ethernet (All versions)
Power Supply Standalone Modules (VAC)
Standalone Modules (VDC)
120/220 VAC, 8-10 Watts
24 VDC, 8-10 Watts (Dual Feed)
120/220 VAC, 8-10 Watts
24 VDC, 8-10 Watts (Dual Feed)
Environmental Operating Temperature
Storage Temperature
Relative Humidity
0° to 60° C (32° to 140° F)
-40° to 85° C (-40° to 185° F)
0 to 95% RH, noncondensing
0° to 60° C (32° to 140° F)
-40° to 85° C (-40° to 185° F)
0 to 95% RH, noncondensing
Dimensions OCR Module 6.39”H x 3.53”W x 6.86”D
(162.3mm H x 89.7mm W x 174.2mm D)
6.39”H x 3.53”W x 6.86”D
(162.3mm H x 89.7mm W x 174.2mm D)
Approval UL and UL/C
Class I, DIV 2, All Groups
Class I, DIV 2, All Groups

Order Information

Part Numbers  
OCR-ETF-(1)-(2)-(3)-(4)-(5) FAST Ethernet Communications 10/100BaseT
OCR-ETG-(1)-(2)-(3)-(4)-(5) Gigabit Ethernet Communications 1000BaseT
(1) “85”
850 nanometer wavelength selection (Multimode only)
1300 nanometer wavelength selection (Multimode or Single Mode)
1550 nanometer wavelength selection (Single mode only
(2) “D” = Interactive Diagnostics
(3) “ST”
ST Fiber Optic Connector Style
LC Fiber Optic Connector Style (Not available for the 850 nm wavelength.)
(4) “24V”
24 VDC Operation
120/220 VAC, 50/60 Hz Operation
125 VDC Operation
(5) “SM”
Single Mode Fiber Compatibility (Available with the 1300 nm or 1550 nm wavelengths only.)
Multimode Fiber Compatibility


Phoenix Digital network communications architecture

This video explains typical applications, types of devices connected, how the redundant fiber ring backbone is connected to each module, and what happens when a fiber or module breaks and what you have to do to repair the link.

Phoenix Digital networking diagnostic software

How to use the Phoenix Digital networking diagnostic software to troubleshoot modules or your network.

OCR Hardware Overview

This video covers fiber and copper connections, setup, power, LEDs, troubleshooting, trap/reset button, SFPs, dip switch settings, and RSS return signal strength.


Softing Inc.