3/28/2019 4:09 AM | |
Joined: 4/18/2016 Last visit: 9/13/2024 Posts: 19 Rating: (2) |
Has anybody used the "S7Safety Reaction Time Table" spreadsheet to calculate the maximum response times of the F-System. https://support.industry.siemens.com/cs/ww/de/view/93839056 It gives three different reaction times:
for fault, no fault scenario and "for any runtime of the standard system." which is the higher value. Section A.2 of SIMATIC Safety - Configuring and Programming manual recommends using the value that is specified for "Any standard system runtimes" as value for the maximum response time. https://support.industry.siemens.com/cs/document/54110126 Given the fail-safe OB is set to run based on a high priority cyclic interrupt, why would the runtime of the standard program (which could be as low as 1ms) affect the response time of the safety system to this extent. |
Last edited by: Jen_Moderator at: 3/28/2019 2:08:33 PMOptimized link. |
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