Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 820

Data Control Instructions
Description
Flags
780
Area
Index Registers
Indirect addressing
using Index Registers
When the execution condition is ON, LMT(680) controls output data according
to whether or not the specified input data (signed 16-bit binary) is within the
upper and lower limits. The contents of words C and C+1 are as follows:
C Lower limit data (minimum output data)
C+1 Upper limit data (maximum output data)
C and C+1 must have the same area classification.
If the input data (S) is less than the lower limit (C), the lower limit data will be
output to D and the Less Than Flag will turn ON.
If the input data (S) is greater than the upper limit (C+1), the upper limit data
will be output to D and the Greater Than Flag will turn ON.
If the input data (S) is greater than or equal to the lower limit (C) and less than
or equal to the upper limit (C+1), the input data (S) will be output to D.
Upper limit
C+1
Lower limit C
Name Label
Error Flag ER
Greater Than >
Flag
Equals Flag =
Less Than Flag <
Negative Flag N
S
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Operation
ON if the upper limit is less than the lower limit.
OFF in all other cases.
ON if the input data (S) is greater than the upper limit.
OFF in all other cases.
ON if the result is 0.
OFF in all other cases.
ON if the input data (S) is less than the lower limit.
OFF in all other cases.
ON if the leftmost bit of the result is "1."
OFF in all other cases.
Section 3-18
C D