Mitsubishi MELSEC Q Series, Programming Manual

Page: 179 / 816

6.1 Comparison Operation Instructions
6.1.5 Character string data comparison
6-17
6
BA
S
IC
INSTRUCTIONS
$=,
$<>,
$<=,
$<,
$>=,
$>
$=, $<>, $<=, $<, $>=, $>
Program E xam pl e
(1) In the following program, the character string data stored in Var_D0 and the following
devices are compared with the character string data stored in Var_D10 and the following
devices, and Y33 turns ON when they are matched.
[Structured ladder]
(2) In the following program, the character string "ABCDEF" is compared with the character
string data stored in Var_D10 and the following devices and when M3 is ON, and Y33 turns
ON when the character string data stored in Var_D10 and the following devices are other
than "ABCDEF".
[Structured ladder]
(3) In the following program, the character string data stored in Var_D0 and the following
devices are compared with the character string data stored in Var_D10 and the following
devices when M3 is ON, and Y33 turns ON when the character string data stored in
Var_D10 and the following devices are equal to or shorter than the character string data
stored in Var_D0 and the following devices, or when M8 is ON.
[Structured ladder]
(4) In the following program, the character string data stored in Var_D0 and the following
devices are compared with the character string "12345", and Y33 turns ON when "12345" is
equal to or longer than the character string data stored in Var_D0 and the following devices
devices or when both M3 and M8 are ON.
[Structured ladder]