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I'm very new to this, I am trying to get through an io scanning application between multiple PLC's using Schneiders SoMachine Software. The Application scans various VSD's and 2 Schneider M241 PLC's using another third M241 PLC whilst using an Ethernet expansion module. My question is how can I scan an actual variable as opposed to a memory word using this application, which I have succeeded in doing.
i.e. Map to a %I0.0 or %Q0.1 etc as opposed to a %MW1 etc.
Thanks
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It is who we bought the stuff from.... Believe it or not I have already contacted them on this, but to no avail.... Due to the fact that they use the Codesys platform I was hoping someone here may have the answer,
Thanks anyway
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Anonymous
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2018-07-10
Originally created by: ph0010421
I hear you.
I'm unfamiliar with the platform but hear regularly abour Schneider's poor support.
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Normally I try to read the forum and answer posts. Sorry I had no time lately. If you want to read actual physical I/O through the Modbus Server you need to read as input(Modbus code 2H) and outputs(Modbus code 1H). See image below from the help file.
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Hi,
I'm very new to this, I am trying to get through an io scanning application between multiple PLC's using Schneiders SoMachine Software. The Application scans various VSD's and 2 Schneider M241 PLC's using another third M241 PLC whilst using an Ethernet expansion module. My question is how can I scan an actual variable as opposed to a memory word using this application, which I have succeeded in doing.
i.e. Map to a %I0.0 or %Q0.1 etc as opposed to a %MW1 etc.
Thanks
Any ideas on this issue?
Still no go?
Originally created by: ph0010421
I don't want to answer on behalf of 3s, but I think you'd get answers from the Schneider; that's who you bought the stuff from.
It is who we bought the stuff from.... Believe it or not I have already contacted them on this, but to no avail.... Due to the fact that they use the Codesys platform I was hoping someone here may have the answer,
Thanks anyway
Originally created by: ph0010421
I hear you.
I'm unfamiliar with the platform but hear regularly abour Schneider's poor support.
Why not have the 3 controllers send the information over a CAN bus and use the 4th controller to read the information off the network?
I'm not familiar with Ethernet protocol using controllers or else I would offer more help.
Normally I try to read the forum and answer posts. Sorry I had no time lately. If you want to read actual physical I/O through the Modbus Server you need to read as input(Modbus code 2H) and outputs(Modbus code 1H). See image below from the help file.