MVI56 GSC
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jwilson
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Thursday 13 July 2006 2:53:24 pm |
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MVI56 GSC
I have recent experience with a MVI56MCM modules and understand the setup to get them to write data.
I see no similiar command setup & instructions in the GSC users manual. I am missing something?
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jsanders
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Friday 14 July 2006 9:14:50 am |
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RE:MVI56 GSC
The MCM module uses Modbus protocol. The command structure of a Modbus command is fixed; therefore, to create a Modbus command in our module, all the firmware needs are the variables....Slave ID, Function Code, Count, Modbus Address, etc.
The GSC is a Generic ASCII serial communication module. It is designed to receive and send ASCII strings. Since this protocol is generic, it is much more free-form than Modbus; therefore, completely different ladder logic is required to send command strings.
If you download a copy of the sample ladder logic and the User Manual from our website and study the ladder, you will soon see how we send strings as blocks of data to the module for it to echo out its ports.
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