Index Modification Of Entire Ladder - Mitsubishi Electric MELSEC-Q/L Programming Manual

Index modification of entire ladder

IX, IXEND
High
Basic
Process Redundant
performance
IX
IXEND
(S): Head number of the devices where index modification data is stored (BIN 16 bits)
Setting Internal device
data
Bit Word
 
(S)
Processing details
• Performs index modification on all devices in the ladder up to the IXEND instruction after the IX instruction, using the index
modification value specified in the index modification table. Refer to Page 496 Designation of modification values in index
modification of entire ladders for how to configure an index modification table. The configuration of the index modification
table and the corresponding index register numbers are as shown below:
Device name
Modification value of timer
S
(T)
S + 1 Modification value of counter
(C)
Modification value of input
S
+ 2
(X)
Modification value of output
+ 3
S
(Y)
Modification value of
+ 4
S
internal relay (M)
Modification value of
S + 5
latch relay (L)
Modification value of
S + 6
link relay (B)
Modification value of
S
+ 7
edge relay (V)
*1 When using a basic model QCPU, index registers with numbers from Z10 onward cannot be used.
LCPU
Universal
Ladder where index modification is performed
R, ZR J\
Bit

Index register
number
S + 8
Z0
S
+ 9
Z1
S
+ 10
Z2
+ 11
Z3 S
+ 12
Z4
S
+ 13
Z5 S
+ 14
Z6 S
S + 15
Z7
U\G
Word
Index register
Device name
number
Modification value of
Z8
data register (D)
Modification value of
Z9
link register (W)
Modification value of
Z10
file register (R)
Modification value of
Z11
buffer register I/O No. (U)
Modification value of
Z12
buffer register (G)
Modification value of
Z13
link direct device
network No. (J)
Modification value of
Z14
file register (ZR)
Modification value of pointer
Z15
(P)
IX S
I X END
Zn Constant Others
*1
7 APPLICATION INSTRUCTIONS
7.6 Structure Creation Instructions
7
493