Siemens SIMATIC ET 200SP HA Ekipman Kılavuzu - Sayfa 41

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Siemens SIMATIC ET 200SP HA Ekipman Kılavuzu
Digital mode with time stamping (accuracy 1 ms)
The following tables show the assignment of the address space of the DI 8x24...125VDC HA
module in digital mode with time stamping (accuracy 1 ms).
Address space
The following figure shows the mapping of the address space of the DI 8x24...125VDC HA with
time stamping (accuracy 1 ms).
IB x +
Meaning
0
DI7
DI6
1
QDI7
QDI6
2 to 11
Time information for time stamping (accuracy 1 ms)
Evaluating the value status
There is a bit value status for each digital input in the input address space.
Irrespective of the diagnostics enables, each value status (each QI bit) provides information on
the validity of the corresponding process value.
• Value status = 1: Process value okay, "good"
• Value status = 0: Process value not okay, "bad"
Basically, the value status is set to "good" if the digital value can be detected without error. The
value status is set to "bad" in the following cases:
• The process value cannot be recorded due to an error.
• The digital channel is deactivated.
Note
The value status is not set to "bad" when there is a wire break on the channel and the wire break
test is disabled.
DI 8x24...125VDC HA
Equipment Manual, 10/2021, A5E39288633-AD
A.7 Address space of the time stamping (accuracy 1 ms)
DI5
DI4
QDI5
QDI4
Parameters, diagnostics messages and address space
DI3
DI2
QDI3
QDI2
DI1
DI0
QDI1
QDI0
41