DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
API Mnemonic Operands Function
41 DECO P Decode
Controllers
ES2/EX2 SS2 SA2
SE SX2
Type Bit Devices Word devices Program Steps
OP X Y M S K H KnX KnY KnM KnS T C D E F DECO, DECOP: 7 steps
S * * * * * * * * * * *
D * * * * * * * *
n * *
PULSE 16-bit 32-bit
SA2
SA2
SA2
ES2/EX2 SS2 SX2 ES2/EX2 SS2 SX2 ES2/EX2 SS2
SE
SE
SE
Operands:
S: Source device to be decoded D: Device for storing the result n: Number of consecutive
bits of S
Explanation:
1. The instruction decodes the lower “n” bits of S and stores the result of “2 n ” bits in D.
2. This instruction is generally used in pulse execution mode (DECOP).
3. When operand D is a bit device, n = 1~8, when operand D is a word device, n = 1~4
Program Example 1:
1. When D is used as a bit device, n = 1 ~ 8. Errors will occur if n = 0 or n > 8.
2. If n = 8, the decoded data is 2 8 = 256 bits data.
3. When X20 goes from OFF to ON, the data of X0~X2 will be decoded to M100~M107.
4. If the source data is 3, M103 (third bit from M100) = ON.
5. After the execution is completed, X20 is turned OFF. The decoded results or outputs will retain
their operation.
SX2
X20
DECOP X0 M100 K3
X2 X1 X0
0 1 1
4 2 1
3
7 6 5 4 3 2 1 0
0 0 0 0 1 0 0 0
M107 M106 M105 M104 M103 M102 M101 M100
3-104