Mitsubishi Electric M800VW Series Programming Manual page 324

M800V/M80V Series PLC Programming Manual (1/2)
8 Function Instructions
8.9 Data Processing Instructions
DECO, DECOP: Decoding from 8 bits to 256 bits
Setting
Bit devices
data
X Y M L F
S
D
○ ○ ○ ○ ○
n
[Instruction symbol] [Execution condition]
DECO
DECOP
 Setting data
Setting data
S Device No. of devices where decoded data is stored
D Head No. of the device where decoding results will be stored
n Valid bit length (1 to 8)
 Functions
DECO
 Decodes the lower n-bits of the device designated by "S", and stores the results at a location 2n-bits from the device desig-
nated by "D".
 The value of "n" can be designated between "1" and "8".
 No processing is conducted if "n" is "0", and there are no changes in data for the device designated at "D".
When "n" is "9" or above, the device data specified by D becomes indefinite.
 The bit devices specified by D are treated as 1 bit, and the word devices specified by D are treated as 16 bits.
 Operation errors
 In the following cases, an arithmetic error occurs, the error flag (SM0) turns ON, and an error code is stored at SD0.
- When the area of a part of 2n bit blocks from the device designated at D does not exist. (Error code: 82)
Usable devices
B SB T SM V T C
○ ○
○ ○ ○ ○ ○
Command
Command
Meaning
Con-
Word devices
stant
D R/ZR W SW SD Z K
○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○
○
303
Digit
Pointer designa- Index
tion
H P
○
DECO S D n
DECOP S D n
Data type
BIN 16 bits
Device name
BIN 16 bits
IB-1501667-B