Detecting Communications Timeouts (4 And 8-Channel Models) - Omron G3ZA - MANUAL 2 User Manual

Detecting Communications Timeouts (4 and 8-channel Models)

4-8 Detecting Communications Timeouts (4 and 8-channel
Models)
Note
1,2,3...
48
Operation can be stopped if communications cannot be performed normally
for longer than the communications timeout time. In addition to stopping oper-
ation, the MV after communications error setting can also be set to output an
MV to each channel after a communications error is detected.
With the upgraded V2 models, the communications timeout time can be set
in seconds.
Communications
G3ZA
Variable type Parameter name
83/C3 Communications timeout time
Communications timeout time
2 (See note 1.) (
(1) When the communications timeout time (minutes) is set, the same time
will be reflected in communications timeout time 2 (seconds). For exam-
ple, a setting of 1 minute will become 60 s.
(2) Communications timeouts will not be detected if the time is set to 0.
(3) The new setting will become valid and detection of communications tim-
eouts will start after executing a software reset with an Operation Com-
mand or turning the power OFF and then ON again.
When a communications timeout is detected, operation will stop, and the com-
munications error flag in the status, the ERROR indicator, and the alarm out-
put will turn ON. To clear the error, execute a software reset or start command
with an Operation Command.
Error status All channels ON
ERROR indicator Lit
Auxiliary output ON
Control output (Run) All channels stopped. The "MV after com-
munications error" value will be output.
Clearing method Execute a software reset or start command
with an Operation Command.
Example: Setting the communications timeout time to 20 seconds
1. Set "communications timeout time 2" to 20 with a Variable Area Write com-
mand.
2. After setting communications timeout time 2, enable the new setting by ex-
ecuting a software reset with an Operation Command or turning the power
OFF and then ON again.
Host device
Operating
Communications timeout time
Setting range
0: Disabled
1 to 60 min
0: Disabled
V2 only) 1 to 3,600 s
Section 4-8
Stopped
Default
0 (Disabled)
0 (Disabled)