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7 APPLICATION INSTRUCTIONS
7.6 Reading/Writing Data Instructions
Reading data from the data memory
S(P).DEVLD
These instructions read data from the device data storage file in data memory.
■Execution condition
■Descriptions, ranges, and data types
*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.
■Applicable devices
Ladder ST
ENO:=S_DEVLD(EN,s,n,d);
ENO:=SP_DEVLD(EN,s,n,d);
FBD/LD
Instruction Execution condition
S.DEVLD
SP.DEVLD
Operand Description Range Data type Data type (label)
(s) Read offset of device data storage file (specified in units of
16-bit words)
0 to 524287 32-bit unsigned binary ANY32
(d) Device for storing the data that has been read Word ANY16
*1
(n) Number of read points 1 to 65535 16-bit unsigned binary ANY16
EN Execution condition Bit BOOL
ENO Execution result Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY
J\ T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
U\G, J\,
U3E\(H)G
Z LT, LST,
LC
LZ K, H E $
(s)
(d)
(n)
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)