Mitsubishi Electric MELSEC iQ-R Series - File Register Read;Write Instructions; Reading 1-Byte Data from the File Register

7 APPLICATION INSTRUCTIONS
7.23 File Register Read/Write Instructions
995
7
7.23 File Register Read/Write Instructions
Reading 1-byte data from the file register
ZRRDB(P)
These instructions read the data from the file register with the specified serial byte number.
■Execution condition
Setting data
■Descriptions, ranges, and data types
■Applicable devices
Ladder ST
ENO:=ZRRDB(EN,s,d);
ENO:=ZRRDBP(EN,s,d);
FBD/LD
Instruction Execution condition
ZRRDB
ZRRDBP
Operand Description Range Data type Data type (label)
(s) Serial byte number of the file register to be read 0 to 4294967295 32-bit unsigned binary ANY32
(d) Start number of the device for storing the data that has
been read
 16-bit signed 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)         
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant) (Process)
(s) (d)
EN ENO
ds