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By Joe Tauser · Posted
Unfortunately UniStream will stomp on your program if you try this. If you change to a model that has a different I/O configuration then you have to delete any reference to onboard I/O points that are different. I would make some buffer input and output bit arrays that match the size of the -T42 onboard I/O. Then do a search and replace (Edit tab) for each real I/O point and replace it with the buffer bit. Finally, when you want to put it back in the field add a couple of blocks to copy real inputs to your input bit array and your output bit array to the real outputs. For example - Original code: Code for the -T42: After deleting rung 2 I was able to change the model to a -B1. I realize it is a bit of a pain in the butt to modify your program this way, but it will work. You do what you can with the tools you have. Joe T. -
You yourself answered the question about the reasons for the failure of ethernet modules. In any case, the user should read about the permissible working conditions before using the equipment in the field. Accordingly, you have a choice - to take one communication module or another. It is another matter to replace the entire controller with the program if it is fundamentally impossible to replace the communication module. Of course, there are no perfect things - there are things that fit and not quite. On the forum there were examples of systems where the PLC was simply installed on a vertical DIN rail. - This is another simple solution to the port pollution problem. I met a PLC hidden in an IP67 cabinet made of stainless steel, which was hidden in another IP67 cabinet made of stainless steel, which was installed in the IP67 body of a machine that packed sausages. To the question of why the controller failed, I answered - it overheated. The plastic on the controller crumbled from the temperature, but the machine worked for some time (about 4 years).
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Looking at Merle's other posts I think you're right. Not enough initial info, and perhaps should have been started in the Unilogic software area.
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Interesting... I've had a few V100-17-ET2 and V200-19-ET2 fail in the field, due to overheating. Might explain why there's V100-S-ET2 as a "wide temperature" model. Unistream, no problems so far. First installation 8 years ago and counting.
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