Delta DVP-SS2 User Manual

DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
3-350
API Mnemonic Operands Function
Controllers
ES2/EX2/
EC5
SS2
SA2
SE
SX2
108 CRC P
CRC checksum
Type
OP
Bit Devices Word devices Program Steps
X Y M S K H KnX KnY KnM KnS T C D E F
CRC, CRCP: 7 steps
S
*
n
*
*
*
D
*
PULSE
16-bit
32-bit
ES2/EX2/
EC5
SS2
SA2
SE
SX2
ES2/EX2/
EC5
SS2
SA2
SE
SX2
ES2/EX2/
EC5
SS2
SA2
SE
SX2
Operands:
S: Starting device for RTU mode checksum n: Data length for CRC operation (n = K1~K256)
D: Starting device for storing the operation result
Explanations:
1. n: n must be an even number. If n is out of range, an error will occur and the instruction will not
be executed. At this time, M1067 and M1068 = ON and error code H’0E1A will be recorded in
D1067.
2. 16-bit mode: When CRC instruction operates with M1161 = OFF, hexadecimal data starting
from S is divided into high byte and low byte and the checksum operation is operated on n
number of bytes. After this, operation result will be stored in both hi-byte and low byte of D.
3. 8-bit mode: When CRC instruction operates with M1161 = ON, hexadecimal data starting from
S is divided into high byte (invalid) and low byte and the checksum operation is operated on n
number of low bytes. After this, operation result will be stored in low bytes of D (Consecutive 2
registers).
4. Flag: M1161 8/16-bit mode

Delta DVP-SS2 Specifications

General

Brand	Delta
Model	DVP-SS2
Category	Controller
Language	English