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fIeLDbUS WATCHDOG
6 fieldbus Watchdog
The fieldbus watchdog is a function in the VARAN control board. It is used to trigger an
error or warning in the inverter, if certain events are not cyclically repeated within a cer-
tain time. The activation of the watchdog is set by the control card parameters fb04 and
fb05. The monitoring time and the at exceeding of the monitoring time executed function
is set by parameter in the inverter (pn05, pn06).
Id-Text
fb04
Meaning
Type
Data length
Access
Coding
Note
Id-Text
fb05
Meaning
Type
Data length
Access
Coding
Note
22
Name
bus watchdog activation
Allows a delayed activation of the fieldbus watchdog after
switching on the device.
Variable
8 bit
read / write
0...65535
Value range
0:
off (fieldbus watchdog inactive)
1:
Activation after the first asynchronous communica-
tion
16:
Activation after the first received process output
data via isochronous communication
Standard value: 0
Possible settings are OR connected.
Name
bus watchdog lock
Determines on which incidents the fieldbus watchdog gets
reseted.
Variable
8 bit
read / write
0...65535
Value range
0:
off (no reset)
2:
When receiving an asynchronous communica-
tion request, the watchdog gets reseted.
128:
When receiving of process output data via
isochronous communication the watchdog gets
reseted.
Standard value: 0
Possible settings are OR connected.
Parameter index
0x2184
Parameter index
0x2185
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