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IC693CPU360 How-To Troubleshoot GE Fanuc PLC Training Series 90-30 CPU

Introduction: GE Fanuc IC693CPU360 Troubleshooting Guide

This troubleshooting guide is a test of a GE Fanuc IC693CPU360 90-30 processor attached to an IC693CHS397 5 slot rack which is empty. For the purpose of this test, you’re just going to be testing the processor alone and it’s going to be powered by a high capacity power supply, an IC693PWR330.

Step 1: Power Up

First thing you are going to do is power it up and you want to look for a solid OK LED light so the power’s on, the OK is on. This tells you that the processor is in good working condition so far.
If this light is not on, then it’s very likely you have a problem with your processor or if it’s blinking you probably have a problem with your processor. If this is the case with you, then you cannot complete the test, so please see links at the bottom of this page for parts and service.

Step 2: Connect to Processor & Proficy Machine Edition

So, what you are going to do now is connect up to the processor. Note that the memory protect switch is in the OFF position. This is recommended and the reason for this is detailed below.
Now go ahead and look in the main rack, in Proficy Machine Edition and look in the main rack and what you are looking for here is to make sure that slot numbers 2 through 5 are empty and that slot number 1 has a CPU360 in it.

Step 3: Configuring Proficy Machine Edition

Now you are going to Download and Run this simple configuration. Before you do, you are going Run go to Target > Online Commands and go to Clear and what you are clearing here, when you open up this sub menu Clear Memory, you just want to select the bottom two categories Controller Fault
Table and I/O Fault Table and clear that.
Don’t clear any memory or anything like that because there may be information on the processor that you want to protect. So, you are going to go ahead and Download and Run this blank configuration. Download and Run so the goal here is that you want to get the processor into Run mode. 
It’s an indication to you that the processor is a good working processor if it’s able to go into Run mode. Now, it’s asking you what do you want to download to the controller. In this case, Hardware Configuration and Logic, just the top two nothing else, you don’t want to write anything else to flash memory so just Hardware Configuration and Logic.
Okay, now before going into Run Mode you want to test that the memory protect switch is working (see above). The memory protection switch is also an I/O enabled switch, it does two functions.  So in this illustration there is an error, it says “The controller is not in Run mode after you attempted to start it, this may be due to a Run Stop position application.” That’s true.
So when you turn this On, you are looking for the I/O to be enabled or the processor to be in Run mode. If it works then you know the processor works fine. 
This is the only button feature that you can test on this processor. So, this test is complete as far as getting the processor into Run mode and make sure that it’s able to get into Run mode.

Step 4: Additional Steps If Necessary

So, if this is a processor that you’ve found to be problematical, its a good idea to try running the processor overnight or over a weekend or a couple days, three days, and what you’re doing is you’re making sure that the processor can actually hold itself in run mode and stays in run mode for that period of time.
That’s typically the second part of this troubleshooting test if we feel like there’s a problem. So if it kicks itself out of run mode the go into your Proficy Machine Edition and click Target and the sub category is Diagnostics and when you click on Diagnostics, you’re Info Viewer tab will open up with a Fault Table and it will tell you exactly why it faulted, what kicked it out of Run mode.
Some of these explanations aren’t really very understandable so if it’s again something that’s troubling you and you can’t figure it out and you need help, this is something that we can help with.

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This entry was posted on May 26th, 2015 and is filed under GE Fanuc, Troubleshooting Guide. Both comments and pings are currently closed.

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