How To Troubleshoot GE Fanuc IC697CPU780

Introduction: GE Fanuc IC697CPU780 Troubleshooting Guide

This is a troubleshooting guide for a GE Fanuc 90-70 processor, IC697CPU780 in a IC697CHS750 five slot rack. The rack is empty because you’re just going to be testing the processor. The processor is going to be powered by an IC697PWR711 power supply. Note that the revision, ie: the letter at the end, does not matter for the test you are doing.

Step 1: Configure & Power Up

So, the first thing you’re going to do is turn the power supply on and when you do you should have an OK light for the top LED. If this light is not on your processor is off or if it’s blinking or you have some sort of blinking pattern, then there’s definitely something wrong with your processor and you won’t be able to follow this test. This is something that PDF Supply typically looks at. We offer exchange programs, re-manufactured and new units. So, if that’s something that interests you, please see us at www.pdfsupply.com

Now that it’s powered up and you’re connected you’re ready for the next step. Keep in mind there’s only one port that you can test on this processor, unlike most other processors. You’re going to connect up to it. Note that there’s no LED that tells you if it’s communicating so you’re just going to go by what you see in Proficy* Machine Edition, which is what is illustrated here using GE Software.

Step 2: Go Into Program Mode

When you’re connected put yourself into program mode. Once you’re in program mode go to Target > Online Commands, and Clear. And this is a memory clearing selection. NOTE, the ONLY thing you want to clear is Controller Fault Table and I/O Fault Table, nothing else because you could risk losing something that you’re trying to save. Now hit OK. Once you’ve successfully done that click Download and Run which is the download information and run button in one. The only thing that you’re going to build here is Hardware Configuration and Logic, you are not going to do any force values and you’re not going to write anything to the flash memory. Again, this is just a simple test and your goal is to try to get your processor into run mode.That’s what we need to do to see that processor is functioning properly.

Step 3: Additional Requirements for this Processor

Now, incidentally for this particular processor, a CPU780, it is required that you have an RCM711 that’s to the right of the processor and under rack 1, a BEM711. Keep in mind they don’t actually have to be there but you need to tell the navigator that these are in the slots in the rack. Without that you won’t be able to get it into Run mode.

Step 4: Testing Switches

Now that you’re done with the build and you’re in Run mode you want to first test this Toggle switch. The LED’s are as follows: on to is 1) OK, middle 2) Run, and 3) bottom is I/O Input Output enabled. It’s enabled when it’s illuminated solid green.When you take it down one notch it shuts off the I/O so then the I/O is disabled. Down one more notch, the Run is disabled.

Step 5: Testing Memory Protect

Next you’ll test memory protect switch on the top. Once you turn the key to ON the LED comes on, telling you that the memory protect is in fact working so you’re good.

Step 6: Additional Steps If Necessary

If you think you’re having problems with this processor then you should leave it running over night or for a couple days or over a weekend. Leave it run mode and when you come back you’re hoping to see that it’s still in run mode.
If for any reason it comes out of Run mode, what you want to do is connect up to it using your Proficy* Machine Edition again, go to Target on the top menu Diagnostics and then click on that and in your info viewer you’re going to have a fault table pop up and it’s going to tell you why it came out of run mode.

Tags: GE Fanuc, IC697CPU780, Troubleshooting Guide

This entry was posted on March 29th, 2015 and is filed under GE Fanuc, Support, Troubleshooting Guide. Both comments and pings are currently closed.