SIMATIC: Problems writing a value

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Hi, I would like to know if one can use a 6ES5721-0CD20 instead of 6ES5721-0CE00. If anybody has information or datasheets for 6ES5721 - 0XXX0...
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Evening all, I'm currently trying to get my head round the siemens s7 and the simatic hmi range and have hit a problem with a simatic hmi. (why...
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hi to all members here, i have visit a damage ready system with S7-300 plc units for repair hw and s/w :hmmm: there is a strange prob , when i try...
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I have a Simatic S5 communicating with a Yokogawa DCS through RS232 and ACM11. The network, communication module are cool and the S5 as well as...
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Hello I have compiled a simple program in Protool and when I try to transfer it to the OP C7-635 it starts transmiting and then stops at this...
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