Event-based IO Changes

32/64 bit multi-platform Ethernet S7 PLC communication suite

Brought to you by: davenardella

Event-based IO Changes

Forum: Bugs reporting

Creator: Behzad Sedighzadeh

Created: 2016-02-19

Updated: 2016-04-05

Behzad Sedighzadeh - 2016-02-19

Dear Mr. Nardella,

Thanks for your great job!
I have a question and you may be able to answer me.
I have a S7315 CPU and would like to automatically receive IO changes on the plc side via protocol, i.e. something event-based.

How cann i achieve this goal with you code?

Thanks a lot,
Behzad

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Bert Kortenbach - 2016-04-05

Hi Behzad,

I don't think it can be done using Snap7. You could use the S7 Ethernet (TCP/IP) communication FB's to actively send data if something changes in the PLC. I have done something like that in the past, and it works very well...

Best regards,

Bert Kortenbach

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