Ron_Smith Posted October 19, 2006 Report Posted October 19, 2006 I've been troubleshooting a machine with a FX1S processor and noticed this error... can someone explain this to me? BTW... I'm an A/B man and have very little experience with Mitsu. Quote
Goody Posted October 19, 2006 Report Posted October 19, 2006 Your error is 6706 at step 159 (I think that is what the s 159 means) And this is what the error is Quote
panic mode Posted October 19, 2006 Report Posted October 19, 2006 I'm using GX developer and it looks like you have error 6706 in step 159 Error code list[Error code 6706] Applicable Machine FX series PLC ===================================================================================== Error code(D8067) 6706 Error messages OPERATION ERROR Step Number of error D8069 LED status(RUN) OFF LED status(PROG.E) OFF PLC ACT STATUS RUN Diagnosis timing While in the RUN state. Error contents and causes A device has been specified outside of the allowable range for an applied instruction operand. Managing method This error occurs during the execution of an operation. When an OPERATION ERROR occurs, STOP the PLC enter programming code and correct the fault. Note: Operation error can occur even when the syntax or circuit design is correct, e.g. T0Z is a valid statement within an FX PLC. But if Z had a value of 10000, the data register T10000 would be attempted to be accessed. This will cause an OPERATION ERROR as there is no T10000 device available. Oooops, too late (didn't refresh before answering) Quote
Ron_Smith Posted October 19, 2006 Author Report Posted October 19, 2006 Great responses guys... both of em Unfortunately I'm working without the source file and have no documentation for this program. I'm gonna pull this processor (not inline with our machine standard specs anyway) and toss in a ML1100. Thanks for the help, and now that I have a Mitsu processor to play with, I'm sure I'll have some questions later. Ron Quote
Crossbow Posted October 19, 2006 Report Posted October 19, 2006 Why pull the unit? It's a simple problem to fix. An address beyond the limits of the PLC is being accessed. Check the step number in the program referred to by the error, see if it is using indirect addressing (V or Z pointers) and see why the pointer has exceeded the valid PLC memory range. Not worth the time to replace the whole PLC. Scroll down to step 159 and post us a screen shot so we can see what that step is. Quote
Ron_Smith Posted October 19, 2006 Author Report Posted October 19, 2006 (edited) The only reason I have to replace the plc is that out of the 100 or so processors we have only 2 are Mitsubishi. I've attached the program so anyone interested can take a peek. This machine measures a thin strip of metal that has "holes" every inch. The metal is fed at a constant rate, holes are counted (47) and then a flying cutoff die shears the strip. The machine is running at the moment and I'm in no hurry to make any changes. I was troubleshooting an unrelated problem and happened to notice the error. Mitsu.zip Mitsu.zip Edited October 19, 2006 by Ron_Smith Quote
Crossbow Posted October 20, 2006 Report Posted October 20, 2006 Seems like if the error was at step 159, it's the preset for the counter. Did the preset get set to a negative number? I would look at the number in D130 and see if it's valid. Counters can be preset 0 to 32,767. Quote
Ron_Smith Posted October 20, 2006 Author Report Posted October 20, 2006 The preset was -1. We inherited this machine from one of our other plants about a year ago. I've never been online with this processor before yesterday so the error must have been there for a while. I'm still going to swap that puppy with a pretty new ML1100 in the near future. That way I'll have the FX on my workbench to play around with. Thanks for the help Ron Quote
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