Appendix D How to Use PLC Function
VFD-E Series
D-40 Revision August 2006, 01EE, SW--PW V1.03/CTL V2.03
Mnemonic Function
END Program End
Operand
None
Explanations:
It needs to add the END command at the end of ladder diagram program or command program. PLC
will scan from address o to END command, after executing it will return to address 0 to scan again.
API Mnemonic Operands Function
10 CMP P S
1
, S
2
, D Compare
Bit Devices Word devices Program Steps
Type
OP
X Y M K H KnX KnY KnM T C D
S
1
* * * * * * * *
S
2
* * * * * * * *
D * *
CMP, CMPP: 7 steps
DCMP, DCMPP: 13 steps
Operands:
S
1
: First comparison value S
2
: Second comparison value D: Comparison result
Explanations:
1. Operand D occupies 3 continuous devices.
2. Refer to each model specification for usage range.
3. The contents of the comparison source S
1
and S
2
are compared and D denotes the
compare result.
4. Two comparison values are compared algebraically and this function compares the two
values that are considered binary values. If b15=1 in 16-bit command, the comparison will
regard the value as the negative of the binary value.
Program Example:
1. If D is set to Y0, then Y0, Y1, Y2 will work as the program example as below.
2. When X10=On, CMP command is driven and one of Y0, Y1, Y2 is On. When X10=Off,
CMP command is not driven and Y0, Y1, Y2 remain in the previous status.
3. The comparison result of 싫, 싪, 실 commands can be got by the parallel connection of
Y0~Y2.
To Next Page
Loading...