DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

3. Instruction Set
5. If rising-edge (LDP, ANDP, ORP) or falling-edge (LDF, ANDF, ORF) contacts are used before
FWD, REV, STOP instructions, sending request flags M1122 (COM2) / M1316 (COM3) has to
be enabled in advance for obtaining correct operation.
6. For detailed information of associated flags and special registers, please refer to RS
instruction.
7. M1177 = OFF, only Delta VFD-A is supported and the definition of each operand is:
a) S 1 = Address of VFD-A. Range of S 1 : K0 ~ K31
b) S 2 = Operation frequency of VFD. Set value for VFD A-type inverter: K0 ~ K4,000
(0.0Hz ~ 400.0Hz).
c) n = Communication mode. Range: K1 ~ K2. n = 1: communicate with VFD at designated
address. n = 2: communicate with all connected VFDs. .
d) The feedback data from the peripheral equipment will be stored in D1070 ~ D1080 After
data receiving is completed, PLC will check if all data are correct automatically. If there
is an error, M1142 will be ON. When n = 2, PLC will not receive any data.
Program Example: COM2 (RS-485)
1. Communication between PLC and VFD-A series inverter. Retry for communication time-out
and data receiving error.
M1002
MOV H0073 D1120
Set up communication protocol as
4800, 8, O, 1
SET
M1120
Retain communication protocol
X0
M1129
M1142
MOV K100 D1129 Set up communication time-out: 100ms
SET M1122 Sending request
Retry when receiving time-out occurs
Retry when data receiving error
X0
FWD K0 K500 K1
Receiving completed
M1127
Processing received data
Communication instruction setting:
Device address: 0
Frequency: 500Hz
K1: communicate with the designated VFD
The received data is stored in low byte
of D1070 ~ D1080 in ASCII format.
RST
M1127
Reset M1127
PLC VFD-A, PLC sends: “C ♥ ☺ 0001 0500 ”
VFD-A PLC, PLC receives: “C ♥ ♠ 0001 0500 ”
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