Automating Manufacturing Systems - Process Control and ...

plc basic functions - 15.17
EQU
A N7:03
B N7:02
NEQ
A N7:03
B N7:02
O:012
00
O:012
01
N7:3=5
N7:2=3
O:012/0=0
O:012/1=1
O:012/2=0
O:012/3=0
O:012/4=1
O:012/5=1
LES
A N7:03
B N7:02
LEQ
A N7:03
B N7:02
O:012
02
O:012
03
N7:3=3
N7:2=3
O:012/0=1
O:012/1=0
O:012/2=0
O:012/3=1
O:012/4=0
O:012/5=1
GRT
A N7:03
B N7:02
GEQ
A N7:03
B N7:02
O:012
04
O:012
05
N7:3=1
N7:2=3
O:012/0=0
O:012/1=1
O:012/2=1
O:012/3=1
O:012/4=0
O:012/5=0
Figure 15.16
Comparison Function Examples
The ladder logic in Figure 15.16 is recreated in Figure 15.17 with the CMP function
that allows text expressions.