Functions
8.2 Time stamping the input signals with IM 153-2
ET 200M
154 Operating Instructions, 12/2008, EWA-4NEB780600602-08
Parameterizing the edges
● Time stamp with edge 0 → 1:
With a signal change on the digital input of 0 → 1 a signal message with signal status 80h
(incoming) is stored in the data record (DS 100 to 114).
● Time stamp with edge 1 → 0:
With a signal change on the digital input of 1 → 0 a signal message with signal status 80h
(incoming) is stored in the data record (DS 100 to 114).
Example
For a fully connected ET 200M (8 digital inputs with in each case 16 digital inputs) the data
record 240 has a total of 50 bytes for the configuration of the time stamp.
Return values on DS_WRITE
Possible return values on writing a data record can be obtained in accordance with the DPV1
standard.
8.2.4.6 Structure of the process interrupt
Structure of the alarm information
The process interrupt is structured in accordance with the DPV1 standard.
Table 8- 1 Contents of the diagnostic frame (example)
Value Meaning
00 0C 00h Station status
05h Master address (e.g. B 5)
80 1Eh Manufacturer ID
43 00 00h Module diagnostics (variable length, here 3 bytes)
07 82 00 00 00 00 00h Module status (variable length, here 7 bytes)
08 02 02 20 00 67 01 0Dh Interrupt part with time stamping
Table 8- 2 Contents of the interrupt section (example)
Value Meaning
08h
• Bit 7 … 6: Code for the interrupt
• Bit 5 … 0: Length of interrupt section
02h Interrupt type
02h Slot
20h
• Bit 7 … 3: Interrupt sequence number
• Bit 2 … 0: Types of interrupt
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