1. Interval comparison ZCP/ZCPD/ZCPF
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1.1. Instruction Description#
Compare the value IN3 with the lower limit IN1 and upper limit IN2, and output the comparison result to OUT and the following two bits.
Assuming IN1=D0, IN2=D2,IN3=D4,OUT=Y000。
| The value of IN1 | the value of IN2 | the value of IN3 | the current comparison result | the output of Y000 | the output of Y001 | the output of Y002 |
|---|---|---|---|---|---|---|
| 100 | 200 | 50 | D4<D0<=D2 | ON | OFF | OFF |
| 100 | 200 | 150 | D0<=D4<=D2 | OFF | ON | OFF |
| 100 | 200 | 250 | D0<=D2<D4 | OFF | OFF | ON |
The lower limit IN1 cannot be greater than the upper limit IN2
1.2. The valid operands of the instruction#
1.2.1. Single word type(ZCP):#
| Input/Output | Data Type | operand | Description |
|---|---|---|---|
| IN1 | 16 bit integer | D/CV/TV/AI/AO/K/H/V/Z/FD, bit composite word (X/Y/M/C/T/S), local variable (LW) | minimum |
| IN2 | 16 bit integer | D/CV/TV/AI/AO/K/H/V/Z/FD, bit composite word (X/Y/M/C/T/S), local variable (LW) | maximum |
| IN3 | 16 bit integer | D/CV/TV/AI/AO/K/H/V/Z/FD, bit composite word (X/Y/M/C/T/S), local variable (LW) | current value |
| OUT | ON/OFF | Y/M/S, word positioning (D/V/Z) | Result |
1.2.2. Double word type(ZCPD):#
| Input/Output | Data Type | operand | Description |
|---|---|---|---|
| IN1 | 32-bit integer | D/CV/K/H/FD, bit composite word (X/Y/M/C/T/S), local variable (LD) | minimum |
| IN2 | 32-bit integer | D/CV/K/H/FD, bit composite word (X/Y/M/C/T/S), local variable (LD) | maximum |
| IN3 | 32-bit integer | D/CV/K/H/FD, bit composite word (X/Y/M/C/T/S), local variable (LD) | current value |
| OUT | ON/OFF | Y/M/S, word positioning (D/V/Z) | Result |
1.2.3. Float type(ZCPF):#
| Input/Output | Data Type | operand | Description |
|---|---|---|---|
| IN1 | 32-bit real number | D/K/FD, local variable (LF) | minimum |
| IN2 | 32-bit real number | D/K/FD, local variable (LF) | maximum |
| IN3 | 32-bit real number | D/K/FD, local variable (LF) | current value |
| OUT | ON/OFF | Y/M/S, word positioning (D/V/Z) | Result |
1.3. Example#
Command table:
NETWORK 000
LD M0
ZCP K100 K200 D0 Y000 // 当D0 < K100时 Y000 = ON ；当K100 <= D0 <= K200时 Y001 = ON ；当D0 > K200时 Y002 = ON。
图1 ZCP
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