Communication modules
Operating Manual Communication interfaces
1002971EN03
49
Watchdog Timer Bit
2
Watchdog Timer Bit
1
Watchdog Timer Bit
0
Watchdog Timeout
1
1
0
5 s
1
1
1
10 s
}
Bit 3 and 4: Reserved
}
Bit 5 Error Message: Error message
If the bit is "1", an error stack entry is generated when the watchdog is triggered.
}
Bit 6 Delayed Response: Delayed response
If the bit is "1", the response (send virtual outputs) is sent after a delay of one cycle.
}
Bit 7: Read/Write: Read/write access
If the bit is "1", write protection is active; data cannot be overwritten. With read access,
the watchdog timer is not reset, Bit 6 Delayed Response is deactivated.
INFORMATION
The watchdog functions of the requests 0x14 segment 0x02 and 0x5C use
the same watchdog timer. In other words, the watchdog timer is reset if
either request is called.
INFORMATION
To test if the watchdog is active, set a virtual input continuously to "1".
If this input becomes "0" after the set watchdog timeout has elapsed, then
the watchdog is active.
5.8
Troubleshooting
5.8.1
Request format does not meet specifications
If the request format does not meet the specifications, the PNOZmulti 2 sends the following
response:
Byte
Response
0
0x05
1
0x02
2
0x00
3
0x02
4
0x00
5
0x02
6
0x10
