Snap-7 and its effect on PLC cycle time #456
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when PLC is executing it's program and suppose it has cycle time of 30mS. When we try to get data from PLC using Snap-7, will that have effect on PLC cycle time.? Will it increase the cycle time from 30mS to 40mS? |
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Answered by
gijzelaerr
Mar 19, 2026
Replies: 2 comments
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Hai,
I think the networking is done separately of the cpu in its own 'module'.
I wrote a program te read basically 'everything' from a cpu taking up to a
second. No problems.
But then again the PLC's I worked with never had a super busy complex
program running. Just a lot of stuff connected.
I would just test it out! And there is probably some documentation out
there describing the behaviour of your plc version and setup.
Stephan.
…On Sat, Aug 5, 2023, 14:40 SachinYadav74 ***@***.***> wrote:
when PLC is executing it's program and suppose it has cycle time of 30mS.
When we try to get data from PLC using Snap-7, will that have effect on PLC
cycle time.? Will it increase the cycle time from 30mS to 40mS?
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Closing as answered. PLC networking is typically handled by a separate communication module and should not significantly impact cycle time. |
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gijzelaerr
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Closing as answered. PLC networking is typically handled by a separate communication module and should not significantly impact cycle time.