Delta Electronics Elevator Drive VFD-VL User Manual
Page 142
Chapter 4 Parameters|
Revision Nov. 2008, VLE1, SW V1.03 4-87
09-04
Communication Protocol
Control
mode
VF
VFPG
SVC
FOCPG TQCPG FOCPM
Factory Setting: 13
Settings
0
Modbus
ASCII
mode, protocol <7,N,1>
1
Modbus ASCII mode, protocol <7,N,2>
2
Modbus ASCII mode, protocol <7,E,1>
3
Modbus ASCII mode, protocol <7,O,1>
4
Modbus ASCII mode, protocol <7,E,2>
5
Modbus ASCII mode, protocol <7,O,2>
6
Modbus ASCII mode, protocol <8,N,1>
7
Modbus ASCII mode, protocol <8,N,2>
8
Modbus ASCII mode, protocol <8,E,1>
9
Modbus ASCII mode, protocol <8,O,1>
10
Modbus ASCII mode, protocol <8,E,2>
11
Modbus ASCII mode, protocol <8,O,2>
12
Modbus RTU mode, protocol <8,N,1>
13
Modbus RTU mode, protocol <8,N,2>
14
Modbus RTU mode, protocol <8,E,1>
15
Modbus RTU mode, protocol <8,O,1>
16
Modbus RTU mode, protocol <8,E,2>
17
Modbus RTU mode, protocol <8,O,2>
1. Control by PC or PLC
A VFD-VL can be set up to communicate on Modbus networks using one of the following modes:
ASCII (American Standard Code for Information Interchange) or RTU (Remote Terminal Unit).
Users can select the desired mode along with the serial port communication protocol in Pr.09-04.
Code Description:
ASCII mode:
Each 8-bit data is the combination of two ASCII characters. For example, a 1-byte data:
64 Hex, shown as ‘64’ in ASCII, consists of ‘6’ (36Hex) and ‘4’ (34Hex).
Character ‘0’ ‘1’ ‘2’ ‘3’ ‘4’ ‘5’ ‘6’ ‘7’
ASCII code
30H
31H
32H
33H
34H
35H
36H
37H
Character ‘8’ ‘9’ ‘A’ ‘B’ ‘C’ ‘D’ ‘E’ ‘F’
ASCII code
38H
39H
41H
42H
43H
44H
45H
46H
RTU mode:
Each 8-bit data is the combination of two 4-bit hexadecimal characters. For example, 64
Hex.
2. Data Format