Mitsubishi Electric MELSEC-Q/L - Floating Point Band Comparisons (Single Precision)

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6 BASIC INSTRUCTIONS
6.1 Comparison Operation Instructions
Floating point band comparisons (single precision)
EZCP(P)
Processing details
• One of (D), (D)+1, and (D)+2 turns on depending on the results (small, within the band, large) after the lower limit values
"(S1) and (S1)+1" and the upper limit values "(S2) and (S2)+1" are compared with the comparison data "(S3) and (S3)+1".
• When the contact turns off, "(D) to (D)+2" hold the conditions immediately before the contact turns on and off.
Precautions
• The three points starting from the device specified by (D) are used. Therefore, do not overlap any device used by others.
• Set values smaller than the upper limit values (S2), (S2)+1 as the lower limit values (S1), (S1)+1. If the lower limit values
(S1), (S1)+1 are larger than the upper limit values (S2), (S2)+1, the upper limit values (S2), (S2)+1 will be handled as the
same values as the lower limit values (S1), (S1)+1.
Operation error
• In any of the following cases, an operation error occurs, the error flag (SM0) turns on, and an error code is stored in SD0.
• QnUDVCPU, LCPU: The serial number (first five digits) is "16112" or later.
(S1): Start number of the devices where the lower limit value is stored (real number)
(S2): Start number of the devices where the upper limit value is stored (real number)
(S3): Data to be compared or start number of the device where the data to be compared is stored (real number)
(D): Start bit device number to which the comparison result is output (Bit)
Setting
data
Internal device R, ZR J\ U\G Zn Constant
E
Others
Bit Word Bit Word
(S1)  
(S2)  
(S3)  
(D)  
Error
code
Error details Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
4101 The range of three points from the device specified by (D) exceeds the range
of the corresponding device.

4140 The specified device value is -0, a subnormal number, NaN (not a number),
or .

Basic
High
performance
Process Redundant Universal
Ver.
LCPU
Ver.
EZCPP
EZCP
EZCP
EZCPP
S1
S2
S2
S3
S3
D
D
S1
Command
Command
EZCP
Contact
S1 S2 S3 D
D
D
D+2
+1
S1 S3
S1
[
[
[
[
[
]
]S2S3
S1
S1
+1
+1
]
]
+1
+1
]+1
>,
,
,
,
,[
[]+1
]+1
,
,>S2S3
Turns on when
Turns on when
Turns on when
S2
S2
S3
S3
S3
≤≤