Delta Electronics AC Motor Drive VFD-E - Manual (Page 341)

Appendix D How to Use PLC Function|
D-58 Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
Operands:
D: Device to be rotated n: Number of bits to be rotated in 1 rotation
Explanations:
1. This instruction rotates the device content designated by D to the left for n bits.
2. This instruction adopts pulse execution instructions (ROLP).
Program Example:
When X0 goes from Off to On, the 16 bits (4 bits as a group) in D10 will rotate to the left, as shown in
the figure below. The bit marked with ※ will be sent to carry flag M1022.
X0
D10 K4
1 1 1 1 1 1 0 0 0 0 0 1 1 0 0 0
1 1 0 0 0 0 0 1 1 0 0 1 1 0 1 1 1
16 bits
Rotate to the left
After one rotation
to the left
Carry
flag
Carry
flag
D10
D10
upper bit
upper bit
lower bit
lower bit
D.5.11 Special Application Commands for the AC Motor Drive
API Mnemonic Operands Function
53 DHSCS S1, S2, D Compare (for high-speed counter)
Bit Devices Word devices Program Steps Type
OP
X Y M K H KnX KnY KnM T C D
S1
* * *
S2
*
D
* * * * *
DHSCS: 13 steps
Operands:
S1: Comparison Value S2: High-speed counter C235 D: Comparison result
Explanations:
1. It needs optional PG card to receive external input pulse.
2. To count automatically, please set the target value by using DHSCS command and set
M1028=On. The counter C235 will be ON when the count number = target value. If you
want to clear C235, please set M1029=ON.