944
7 APPLICATION INSTRUCTIONS
7.20 Data Processing Instructions
CRC operation
CRC(P)
These instructions generate the CRC value for (n) 8-bit data (unit: byte) starting from the device specified by (s), and store the
CRC value to the device specified by (d).
■Execution condition
■Description, range, data type
■Applicable devices
*1 FX and FY cannot be used.
• The RnCPU and RnENCPU with firmware version "17" or later support these instructions. (Use an engineering tool with version "1.020W" or later.)
Ladder ST
ENO:=CRC(EN,s,n,d);
ENO:=CRCP(EN,s,n,d);
FBD/LD
Instruction Execution condition
CRC
CRCP
Operand Description Range Data type Data type (label)
(s) Start device where the target data of CRC value generation
is stored
16-bit signed binary ANY16
(d) Device where the generated CRC value is stored 16-bit signed binary ANY16
(n) Number of 8-bit data (unit: byte) for which the CRC value is
generated or the device storing the number of 8-bit data
(unit: byte)
0 to 65535 16-bit unsigned binary ANY16_U
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)
*1
(d)
*1
(n)
*1
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)
To Next Page
Loading...
