Output Unit; Output Holding Function Setting Method - Panasonic S-LINK V User Manual

Selection of Output Holding Function for Output Unit
Output units are equipped with the output holding function.
If a transmission error is detected, the output holding function will be activated to hold the output condition de-
tected just before occurrence of the error.

Output holding function setting method

CAUTION
Before setting the output holding function, fully understand the function, and check the operation con-
dition of the output-to device. If this function is not set correctly, a serious problem may occur.
The output hold setting switch is at the end of the address setting switch panel.
Set the 'HOLD' switch to ON / OFF to set the output holding function.
Output hold setting switch
<If output module is SL-VMP8 or SL-VMP16>
If the line between HOLD (pin No. 29) and ADD. (COM.) (pin No. 28) is opened, the output holding function will
be canceled ('HOLD OFF' mode).
If this line is shorted, the output holding function will be set ('HOLD ON' mode).
● Before delivery, the output hold setting switch is set to OFF (the 'HOLD OFF') mode is
NOTE
set.
● If it takes a long time to turn off the power of the controller, the output holding function
may not operate properly.
32
Operation in normal
transmission mode
OFF
Output operation
ON
HOLD OFF
ADD.
HOLD
(COM.)
28 29
'Opened'
ON
HOLD
Operation in transmission error mode
Turning off of output
Holding of output condition detected
just before occurrence of error
HOLD ON
ADD.
HOLD
(COM.)
28 29
'Shorted'