Explain increment instruction in the PLC using an example.
Application:-Understand the concept of increment instruction in the PLC.
Write the PLC program using a ladder diagram language to understand the concept.
Diagram:-
Explanation:-
The increment instruction is used to add value.it
will add 1 in input/output value. Generally, this instruction is used to increment
the value of the application. For example, if you want to count value
periodically. Example purpose we have taken here HMI so the user can enter value
and instruction will increment the value.
So for that, we can take the input/output register for
example. Here MW 20 is the input/output register.
PLC
program:-
Write the ladder program for NEG instruction using
ladder diagram language. Here for ladder logic, we can use any supported PLC
system like S7-1200, S7-1500, or any other PLC which can support this
instruction. In our application, we have used S7-1200 PLC for reference.
M
Memory:-
Input/output value:-MW20
|
Network
1:- INC instruction operation |
PLC
program Explanation:-
In network 1,
we have taken increment instruction. So 1 value will be added into MW 20
register. Hence IN/OUT+1=IN/OUT