Delta DVP-SS2 User Manual

DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
3-340
API Mnemonic Operands Function
Controllers
ES2/EX2/
EC5
SS2
SA2
SE
SX2
105 RDST
Read VFD Status
Type
OP
Bit Devices Word devices Program Steps
X Y M S K H KnX KnY KnM KnS T C D E F
RDST: 5 steps
S
*
*
*
n
*
*
*
PULSE
16-bit
32-bit
ES2/EX2/
EC5
SS2
SA2
SE
SX2
ES2/EX2/
EC5
SS2
SA2
SE
SX2
ES2/EX2/
EC5
SS2
SA2
SE
SX2
Operands:
S: Device address n: Status content to be retrieved
Explanations:
1. M1177 = OFF (Default), RDST instruction supports COM2(RS-485).
2. M1177= ON, RDST instruction supports COM2(RS-485), COM3(RS-485).
3. M1177 has to be set up in advance for selecting the target model of VFD. When M1177 = OFF
(Default), RDST instruction supports Delta’s VFD-A inverter. When M1177 = ON, the instruction
supports other models of VFD inverters, e.g. VFD-B, VFD.
4. There is no limitation on the times of using RDST instruction, however only one instruction can
be executed on single COM port at a time
5. Rising-edge contacts (LDP, ANDP, ORP) and falling-edge contacts (LDF, ANDF, ORF) can not
be used with RDST instructions. Otherwise, the data in receiving registers will be incorrect.
6. For detailed information of associated flags and special registers, please refer to RS instruction.
7. M1177 = OFF, only VFD-A is supported
a) Range of S: K0 ~ K31
b) Range of n: K0 ~ K3
c) n: Status content to be retrieved
n=0,
frequency
n=1,
output frequency
n=2,
output current
n=3,
Operation command
d) The feedback data consists of 11 bytes (refer to VFD-A user manual), and will be stored in
low bytes of D1070 ~ D1080.
”Q, S, B, Uu, Nn, ABCD”
Feedback
Explanation
Data storage
Q
Header of question string: ’Q’ (51H).
D1070 low
S
Checksum: 03H.
D0171 low
B
Acknowledge back. Correct: 06H, Error: 07H.
D1072 low
U
Communication address (range: 00~31). Displayed in
ASCII format.
D1073 low
U
D1074 low
N
Status content to be retrieved (00 ~ 03). Displayed in ASCII
format.
D1075 low
D1076 low
A
Retrieved status content. The content of ”ABCD” differs
according to value 00~03 set in NN. 00 ~ 03 indicates
frequency, current and operation mode respectively.
Please refer to the explanations below for details.
D1077 low
B
D1078 low
C
D1079 low
D
D1080 low

Delta DVP-SS2 Specifications

General

Brand	Delta
Model	DVP-SS2
Category	Controller
Language	English