Delta VP3000 Series - Page 348

Chapter 7 Second Development PlatformVP3000
339
API Instruction code Operand Function
111 D EZCP P S
1
, S
2
, S, D
Binary floating-point number zone
comparison
Type
Operand
Bit devices Word devices
16-bit instruction
- - - -
32-bit instruction (17 steps)
DEZCP
C
ontinuous
execution
type
DEZCPP
Pulse
execution
type
Associated flag: none
X Y M K H KnX KnY KnM T C D
S
1
  
S
2
  
S
  
D
 
Caution for using operand
 Operand D occupies 3 consecutive devices.
 See the specification of each model for the scope of device’s usage.
Description
 S
1
: lower bound of binary floating-point in zone comparison
S
2
: upper bound of binary floating-point in zone comparison
S: binary floating-point number comparison value
D: comparison result, occupies 3 consecutive devices
 S is compared with S
1
and S
2
, and the result is stored in D.
 If S
1
or S
2
is a designated constant K or H, the instruction will convert the constant into a binary
floating-point value before the comparison.
 When S
1
> S
2
, the instruction uses S
1
as upper / lower bound for comparison.
Example
 Designate the device to be M0, and this automatically occupies M0 to M2.
 When X0 = ON, DEZCP instruction is executed, and one of M0, M1, and M2 will be ON. When
X0 = OFF, EZCP instruction is not executed, and M0, M1, and M2 remain their status before X0
= OFF.
 To clear the comparison result, use RST or ZRST instruction.