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Questions tagged [s7-1200]

This is a tag to identify Siemens plc's from the product line S7-1200 series.

Questions related to the S7-1200 line may include module setup, function, errors, OPC communication but also communication via for example the snap7 library.

Some issues you may post are related to older PLC firmware versions in combination with certain Tia-Portal versions. If this applies to your case include version numbers always in the question either upfront or after the issue is solved. This way you save other users a lot of time finding bugs that are user coding unrelated.

58 questions
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C# and PLC (S7-1200) Data Block Reading Error 33028

I am working on the connection between C# and a Siemens PLC (S7-1200). I've created a datablock (a.k.a. database) to which I need to read and eventually write. The connection to the PLC works, but I can't read anything from its datablock. It always…
Frysning
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libnodave communication with S7-1200

For a couple of days i've been trying to use libnodave as communication library to communicate with a S7-1200 PLC of Siemens(CPU 1214C). With the libnodave library there are a couple of things provided. The Delphi application is working, the…
user3707349
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S7.Net Plus WriteBits not working for Bit addressing

I'm using S7.Net Plus for Modbus TCP communication with Siemens S7 1200 PLc. I'm able to sent all types(integer, word, double) of data to PLC. Boolean only when I'm using Read single variable class eg: plc.write("DB12.DBX0.0",false); This is not…
impulse101
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$.getJSON correctly executed, but js tags not updated

I'm not an expert on JS and i'd like to have any support. I'm trying to update many tags (1 in code here under) every 1000ms. I'm using this code :