Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

Page: 1015 / 2110

7 APPLICATION INSTRUCTIONS
7.25 Clock Instructions
1013
7
Comparing date data
LDDT  , ANDDT  , ORDT 
These instructions compare the specified date data, or compare the date data with the current date.
*1 The engineering tool with version "1.035M" or later supports the ST.
*2 EQ indicates =, NE indicates <>, GT indicates >, LE indicates <=, LT indicates <, and GE indicates >=.
■ Execution condition
Setting data
■
Description, range, data type
*1 When specifying setting data by using a label, define an array to secure enough operation area and specify an element of the array
label.
Ladder ST
*1
(  indicates T=, DT<>, DT>, DT<=, DT<, or DT>=.)
ENO:=LDDT_  (EN,s1,s2,s3);
ENO:=ANDDT_  (EN,s1,s2,s3);
ENO:=ORDT_  (EN,s1,s2,s3);
(  is replaced by any of the following: EQ, NE, GT, LE, LT, GE.)
*2
FBD/LD
(  is replaced by a combination of LDDT_, ANDDT_, or ORDT_ and EQ, NE, GT, LE, LT, or GE.)
*2
Instruction Execution condition
LDDT  , ANDDT  , ORDT  Every scan
Operand Description Range Data type Data type (label)
(s1) Start device where the data to be compared is stored  16-bit signed binary ANY_DT
*1
(s2) Start device where the data to be compared is stored

16-bit signed binary ANY_DT
*1
(s3) Comparison target setting value or the number of
comparison target data 0001H to 0007H, 8001H to
8007H 16-bit signed binary ANY16
EN Execution condition

Bit BOOL
ENO Execution result  Bit BOOL
RnCPU RnENCPU
RnSFCPU RnSFCPU RnPCPU RnPCPU
(Standard) (Safety) (Redundant) (Process)
LD
AND
OR
(s1) (s2) (s3)
(s1) (s2) (s3)
(s1) (s2) (s3)
EN ENO
s1
s2
s3