FANUC EP-5261 — Serial Communication Module

Part number	EP-5261
Brand	FANUC
Category	Communication Module
Description	Serial Communication Module
Manufacturer	GE Fanuc Emerson
Product Line	PACSystems RSTi-EP
Part Number	EP-5261
Weight	1.00 lbs (0.45 kg)
Product	Serial Communication Module
Number of Serial Interfaces	1
Interface Type Options	RS-232, RS-485, and RS-422
Supply Voltage Range	20.4 to 28.8 Volts DC
Interface	RSTi-EP System Bus
System Data	Parameter, Process, and Diagnostic Data (data depends on the type of network adapter that is used)
Bus Transfer Rate	48 Mbps
Serial Transfer Rate	300 to 115200 bps
Maximum Power Supply Output Current	500 mA
Module Diagnosis	Supported
Individual Channel Diagnosis	Supported
Operating Temperature	-4 to 140 degrees Fahrenheit
Storage Temperature	-40 to 185 degrees Fahrenheit

The EP-5261 from GE Fanuc Emerson is a serial communication module in the PACSystems RSTi-EP series. This device accommodates a variety of interface options, including RS-232, RS-485, and RS-422, with a single serial interface designed to facilitate data exchange in industrial environments.

Compatibility data for this part number is being verified. Send an RFQ with your equipment model and serial — our suppliers confirm fitment before quoting.

Data compiled from 1 verified source. Last reviewed 2026-08-16.