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

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
API Mnemonic Operands Function
42 ENCO P Encode
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 encoded D: Device for storing the result n: Number of consecutive
bits of S
Explanation:
1. The instruction encodes the lower “2 n ” bits of source S and stores the result in D.
2. They highest active bit in S has the priority for encoding operation.
3. This instruction is generally used in pulse execution mode (ENCOP).
4. When operand S is a bit device, n=1~8, when operand S is a word device, n=1~4
5. If no bits in S is active (1), M1067, M1068 = ON and D1067 records the error code 0E1A
(hex).
Program Example 1:
1. When S is used as a bit device, n = 1 ~ 8. Errors will occur if n = 0 or n > 8.
2. f n = 8, the decoded data is 2 8 = 256 bits data.
3. When X0 goes from OFF to ON, the data in (M0 to M7) will be encoded and stored in lower 3
bits of D0 (b2 to b0). The unused bits in D0 (b15 to b3) will be set to 0.
4. After the execution is completed, X0 is turned OFF and the data in D remains unchanged.
SX2
X0
ENCOP M0 D0 K3
M7 M6 M5 M4 M3 M2 M1 M0
0 0 0 0 1 0 0 0
7 6 5 4 3 2 1 0
all be 0
4 2
0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
b15
D0
1
1
b0
3-106