Watchdog
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Function
This module checks whether a telegram has arrived within a set time. Output 1 and Output 2 send a telegram when the preset sequential monitoring time has expired.
The reset input waits for a signal. If no signal arrives within the cycle time then Output 1 is reset.

If the monitoring time has expired then the watchdog module can be reactivated by an ON telegram at the reset input or by the switch ON/OFF input.
Example
Bus subscribers can be monitored with this and an alarm can be triggered if necessary.
Inputs
Type Initial value Description
Monitoring time in seconds 0 Determines the cycle time in seconds.
Switching ON/OFF 0 Activates or deactivates the watchdog module.
A value that is not equal to zero switches the module on.
A value that is equal to zero switches the module off.
Reset 0 If this input receives a telegram (independent of the value) then the monitoring (watchdog) cycle is set to the value zero. The cycle restarts.
Outputs
Output 1 (send by change) 0 Sends a 1 after the cycle time has expired if no telegram was received at the reset input.
A 1-bit value is output
Output 2 negates (send by change) 0 Sends a 0 after the cycle time has expired.
A 1-bit value is output.
Commands
HS Commands (Output 1) - The commands assigned here are run when the value of output telegram at output 1 is not equal to zero.
HS Commands (Output 2) - The commands assigned here are run when the value of output telegram at output 2 is not equal to zero.
Other
Telegram interval - Can be changed.
Recalculated on start Yes  
Module is retentive No  
Internal designation: 9031
Value table provided as an example
Point of time in seconds Cycle ON/OFF Reset Output 1
sends		 Output 2
sends
Start 10 1 - 0 1
10 10 - - 1 0
After the monitoring time has expired (cycle), an ON telegram is sent to Output 1. Further monitoring is stopped.
Set cycle time: 10 seconds
Point of time in seconds Cycle ON/OFF Reset Output 1
sends		 Output 2
sends
Start 10 1 - 0 1
7 10 - 1 - -
16 10 - 1 - -
26 10 - 0 1 0
After the monitoring time has expired (cycle), an ON telegram is sent to Output 1. Further monitoring is stopped.
Info box
If there is no cyclic sender in the EIB, which the reset input resets, then the HomeServer can request the value of the EIB to be monitored using a telegram generator with a cyclic command.
The request should not be made immediately before expiry of the cycle time as the response time may be increased if there is a heavy load to the bus.
Similar functions
Error messages

Help / Logic / Watchdog / Inputs / Outputs / Value table / Info box
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