How-to Troubleshoot IC697CPM924 GE Fanuc PLC Unit Diagnostics Series 90-70 CPU IC697CPM925

Introduction: GE Fanuc IC697CPM924 OR IC697CPM925 Troubleshooting Guide

This troubleshooting guide is a test of a GE Fanuc IC697CPM924 central processor and it’s in an IC697CHS750 5 slot rack and it’s being powered by an IC697PWR711 power supply. The unit is powered up.

Step 1: Check the OK LED

The first thing to point out is that there is a solid OK LED. In this illustration the door is off just so that it’s not interfering with the view for the test; this troubleshooting guide is going to go over all of these LED’s, switches and functions.

 

Step 2: What To Do if LED is Not Working

So, if your light is not working, if it’s not solid if it’s blinking and you can’t connect that means that there’s definitely a much bigger problem with your processor. If this is the case please see the bottom of this page for links to help and parts.

Step 3: The Connection & Setup

So, you should be connected now using an AS693232SNP cable (see above), your programming cable. It has LED’s that blink for user interface, that lets you know that the software and the processor are communicating.
Now that you are connected, you are going to go to the green hand print to toggle you into Program Mode then from there, on your top menu bar you are going to go to Target, down to Online Commands and then to Clear. And what you want to Clear there is the bottom two selections, Controller Fault Table and I/O Fault Table.
Alright, because it’s new what you’re asking the processor to do is new so you want to clear those two and make sure that you don’t clear anything else, or you’re in danger of losing information that you may use so don’t do that; just the bottom two selections and click okay.

Step 4: Download & Run

The next thing you’re going to do is click the Download and Run Icon, the Download Information and Run Icon in one button.
The first thing it’s going to ask you is what do we want to download and for this particular test, it’s just a simple test, it’s on the processor itself the goal is to get it into Run Mode so you are going to click the top two selections: Hardware Configuration and Logic and the build will continue and then it will allow you to go into Run Mode and that should happen quickly.
Okay, so now you are in Run Mode and the first thing, there’s no other ports there’s not a lot of features to test but we will test the toggle switch and the memory.

Step 5: Test Toggle Switch & Memory Protect

So the Toggle Switch is in the upright most position and all the LED’s are on and that means that it’s Run Enabled and Outputs are Enabled so you are going to go to the middle selection on the Toggle Switch, the bottom light goes off and that’s telling you are in Run Mode but the Outputs are Off.
Alright, so if that works and then go down one more on the toggle switch, the bottom most selection of the Toggle Switch and you have stopped the processor at this point, it’s in Stop Mode manually.
So, if that works fine then the next thing, of course, is to test that your Memory Protect is working. Really you’re checking the Switch, most failures are in the Switch itself.
Turn that on, the key can be inserted at the top and if the switch is good, the LED will be indicating to you that the Memory Protect is working.

Step 6: Additional Steps if Necessary

So if this is a processor that you feel is giving you trouble, it’s a problem processor you think, what you want to do is let this processor Run overnight or over a couple days. And the goal there, what you try to do, is to make sure that it stays in Run Mode and if for some reason it kicks itself out, it voluntarily fails, and you come back and the LED’s aren’t on or it’s not in Run Mode, whatever the reason, then you should go to Proficy Machine Edition.
In your software go to Target and then click on Diagnostics and your Info Viewer Table will open up a Fault Screen. It will tell you exactly what happened, why it faulted and what the reasons are. Sometimes it’s difficult to interpret what it’s telling you because it sometimes talks in codes that are hard to understand. But most of the time it has some pretty valuable information so definitely go there first.

Tags: GE Fanuc, IC697CPM924, Troubleshooting Guide

This entry was posted on May 18th, 2015 and is filed under GE Fanuc, Troubleshooting Guide. Both comments and pings are currently closed.