I have been tasked with replacing a Obsolete Klockner-Moeller PS316 Modular PLC with a Mitsubishi Q series PLC and although im familiar with mitsibishi i havent had very much experiance with Klockner-Moeller. looking through the program i have noticed a lot of rungs which are similar to the following
-I/I------( )
M131 M131
-I/I------>>JCN LAB-0054
M131
I understand that the second rung is a conditional jump to label 54 within the program when M131 is false but i dont understand why they try to set the output on the previous rung.
Is this something to do with the way KM plcs Scan the program?
Any help or thoughts would be appriciated
Many thanks
Andy
-I/I------( )
M131 M131
-I/I------>>JCN LAB-0054
M131
I understand that the second rung is a conditional jump to label 54 within the program when M131 is false but i dont understand why they try to set the output on the previous rung.
Is this something to do with the way KM plcs Scan the program?
Any help or thoughts would be appriciated
Many thanks
Andy