Mitsubishi Electric MELSEC-Q/L Programming Manual page 155

• The values to be input to (s) is bit, word (signed), double word (signed), word (unsigned), 16-bit string, double word
(unsigned), 32-bit string, single-precision real, double-precision real, string, time type data.
• Rounding error may occur when specifying single-precision real or double-precision real type data to (s1) through (s28) by
programming tool.
For precautions when setting an input value using a programming tool, refer to the following.
 MELSEC-Q/L/F Structured Programming Manual (Fundamentals)
• The number of pins of (s) can be changed in the range from 2 to 28. (The number of pins of (s) for comparison operator
NE(_E)) is fixed at (s1) and (s2).
■Operation result
• Function without EN/ENO
An operation is executed and the operation value is output from (d).
• Function with EN/ENO
The following table shows the executing conditions and operation results.
EN
TRUE (Operation execution)
FALSE (Operation stop)
*1 When FALSE is output from ENO, the data output from (d) is undefined. In this case, create a program so that the data output from (d) is
not used.
Operation error
• No operation error occurs.
Program example
■GT_E
The program which performs comparison operation between the values input to (s1) and (s2), and outputs the operation result
from (d).
[Structured ladder/FBD]
[ST]
g_bool3 := GT_E(g_bool1, g_int1, g_int2, g_bool2);
ENO
TRUE
*1
FALSE
(d)
Operation output value
Undefined value
5 APPLICATION FUNCTIONS
5.6 Standard Comparison Functions
5
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