Siemens SIMATIC ET 200PA SMART - Page 113

Hardware interrupt with time stamping of digital input signals
If the IM 650 signals a hardware interrupt (slot number in byte x+2 = 2), at least 1 data record
with messages about time stamped signal changes or about special messages is present.
The data record can be read and evaluated with the PCS 7 blocks for processing time-stamp
signals (see
PCS 7 documentation).
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Figure 8-14 Structure starting from byte x+4 for hardware interrupt (time stamping)
Hardware interrupt of analog input modules
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Figure 8-15 Structure starting from byte x+4 for hardware interrupt (analog inputs)
Interrupt, error and system messages
8.3 S7 diagnostics
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB 113