Omron ZEN Quick Guide

8 Troubleshooting ZEN Programmable Logic Module
OMRON ELECTRONICS, S.A. Page 38
Error at power ON or during execution
Error message Cause Possible solution
I/O BUS ERR Connection error in the I/O
expansion unit
Switch off the power supply and check
that the expansion unti is connected
correctly.
MEMORY ERR Program error Execute the ‘All Clear’ operation and
rewrite the program.
I2C ERR Communication error
between Memory and RTC
Press any key and clear the error.
Error during program transfer from Memory Cassette
Error message Cause Possible solution
M/C ERR Error in the cassette program Save the error-free program on the
cassette
Note. Use ZEN Support Software to read the error messages for LED-type
CPUs.

Omron ZEN Specifications

General

Display	LCD
Mounting Type	DIN Rail
Operating Temperature	-10 to 55°C
Power Supply Voltage	100-240V AC
Output Type	Relay, Transistor
Number of Outputs	4-8
Programming Language	Ladder Logic