Filter
Top Products
4 - 26
4 FUNCTIONS
MELSEC-QnA
4.10 Module Reset Function from a Sequence Program
When the switch setting is changed or an error occurs with the module, the module
can be reset from the sequence program instead of resetting the programmable
controller CPU.
However, reset cannot be performed when there is module error (Xn0 is on).
POINT
Because the programmable controller CPU is not reset, other modules will not be affected at
all.
A program example for resetting is shown below.
This example assumes that the module's first I/O No. is X/Y30.
SET
Reset command
X34 (Module reset accept complete)
Module reset request off
RST Y34
Module reset request on
Y34
REMARK
The following changes cannot be performed by the module reset request (Yn4). Turn the power
off then on, or reset the programmable controller CPU.
1) Station No. 0 (master station)
change to station No. 1 to 64 (local station)
2) Station No. 1 to 64 (local station)
change to station No. 0 (master station)
3) Mode 0 or 2
change to test mode