5 Categories and Use of Basic Application Instructions
DVP-PM Operation Instruction
5-24
API Mnemonic Operands Function
11
D ZCP P
Zone Compare
Controllers
20PM 10PM
Bit Devices Word Devices Program Steps
Type
OP
X Y M S K H KnX KnY KnM KnS T C D V Z
S
1
* * * * * * * * ***
S
2
* * * * * * * * ***
S * * * * * * * * ***
D * * *
ZCP, ZCPP: 9 steps
DZCP, DZCPP: 12 steps
Operands:
S
1
: Lower bound of zone comparison S
2
: Upper bound of zone comparison S: Comparison value
D: Comparison result
Explanations:
1. S is compared with its lower bound S
1
and upper bound S
2
and D stores the comparison results.
2. ZCP instruction supports V and Z. When ZCP is used as 16-bit instruction, Z device cannot be adopted; when
ZCP is used as 32-bit instruction, V device cannot be adopted.
3. Operand S
1
should be smaller than operand S
2.
When S
1
> S
2
, the instruction takes S
1
as the 1
st
comparison
value and performs normal comparison similar to CMP instruction.
4. Operand D occupies 3 consecutive devices. D, D +1, D +2 hold the comparison results, D = ON if S
1
> S, D +1
= ON if S
1
≦ S ≦ S
2
, D +2 = ON if S
2
< S.
Program Example:
1. If D is set as M0, then M0, M1, M2 will work as the program example below.
2. When X0 = ON, ZCP instruction is driven and one of M0, M1, M2 is ON. When X0 = OFF, ZCP instruction is not
driven and M0, M1, M2 remain in the previous status.
X0
ZCP
K10
K100 C10
M0
M1
M2
When K10 M0 = On> C10,
When K10 < C10, < K100, M1 = On
When C10 K100, M2 = On
>
M0
3. Use RST or ZRST instruction to reset the comparison results
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