Watchdog Timer - YOKOGAWA GX20 User Manual

1.20 Configuring Communication Channels (/MC option)
Explanation
1-174
1
Preset value
Setup Item
Preset value
1 Appears when On/Off is set to On.
Preset value
Set the preset value.

Watchdog timer

Setup Item
On/Off
1
Timer
1
Value at timer-expired
1 Appears when the watchdog timer is set to On.
On/Off
Set this to On to use the watchdog timer.
Timer
Set the duration for monitoring values that fail to be updated.
If a value is not updated within the specified duration, the value is replaced.
Value at timer-expired
Set whether to set the value when the timer expires to the last value or preset value.
Watchdog Timer Function
Data may fail to be updated due to Modbus or other communication problems.
The watchdog timer function replaces values with preset values or last values when values
are not updated within the specified duration (timer).
Data replacement occurs immediately when the timer expires, and the values are held until
the next read cycle.
Communication
channel data
A
Selectable Range or Options
–9.999999E+29 to 9.999999E+29
–9.9999999E+29 to –1.0000000E–30, 0,
1.0000000E-30 to 9.9999999E+29
Selectable Range or Options
Off, On
1 to 120 (s)
Last value, Preset value
Read cycle
Timer
B C D E
Communication data
Default Value
0
Default Value
Off
30
Last value
Z Replace data
E E F G H
Data not updated
Preset value: Z
IM 04L51B01-01EN