37
Input processing
Before PLC executing the program, read every input terminal’s ON/OFF status to the image
area.
When the program is running, even the input changed, the content in the input image area will
not change until the next scanning period coming.
Output processing
After running all the instructions, transfer the ON/OFF status of output Y image area to the
output lock memory area. This will be the actual output of the PLC.
The output contactors will delay the action according to the output soft components reponse.
2-5．Auxiliary Relay (M, HM, SM)
The auxiliary relays in XD/XL series PLC are all in decimal form, please see the following
table:
To Next Page
Loading...
