What is myOMRON?

Click here to find out

Search myKnowledge

Login

Username

Password

Register / Forgot password?

myKnowledge

Main > Product Type > Automation Systems > PLCs

E-mail

How To Lock The I/O Of A Machine During A Transition To PROGRAM Mode?

Setting the "IOM Hold Bit" A500.12 (CS1/CJ1/CJ2) will hold the state of Inputs and Outputs during changing of PLC mode, for example from RUN to PROGRAM for a transfer of parameters and then returning to RUN. In addition, this behaviour can be maintained in case of power failure via the PLC Settings menu by ticking the Startup Hold: "IOM Hold Bit" option.

In contrast, the "Output OFF Bit" A500.15 forces OFF all Outputs on Output Modules when the CPU is in RUN, MONITOR, or PROGRAM mode. Note that CPU LED INH reminds you that the forcing is in operation.

Comments (View All Comments / Add Comment)

What Does It Mean When The “I” Or “Q” Is Displayed In Front Of A Bit Address In A Ladder Program In CX-Programmer FA Integrated Tool Package? CX-Programmer Ver.2.0 or higher displays "I:" and "Q:" in front of addresses in a ladder diagram to help you differentiate between inputs and outputs...	What Is The Difference Between CPM2C PLC CPU Units With Sinking Outputs And Sourcing Outputs? With sinking outputs, current flows in the following order: "Positive power supply line" to "Load" to "CPM2C" to "Negative power...	Should I Worry About Warnings After Compiling In CX-Programmer? There is a big difference between an "Error" and a "Warning". An "Error" indicates that it may not be compiled and that a syntax error is...

Created	2008-09-11
Modified	2010-02-19
Views	117

Glossary

You are not logged in.