Control By Pc Or Plc (Computer Link); Code Description; Data Format - Delta CP2000 Series User Manual

 Control by PC or PLC (Computer Link)
A VFD-CP2000 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 RS-485 serial port communication
protocol in Pr.09-00.
 MODBUS ASCII (American Standard Code for Information Interchange): Each byte 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).

1. Code Description

Communication protocol is in hexadecimal, ASCII:"0", "9", "A", "F", every 16 hexadecimal
represents ASCII code. For example:
Character
ASCII code
Character
ASCII code

2. Data Format

10-bit character frame (For ASCII):
(7, N, 2)
Start
0
bit
(7, E, 1)
Start
0
bit
7: 8, N, 2 for ASCII
8: 8, E, 1 for ASCII
9: 8, O, 1 for ASCII
10: 8, E, 2 for ASCII
11: 8, O, 2 for ASCII
12: 8, N, 1 for RTU
13: 8, N, 2 for RTU
14: 8, E, 1 for RTU
15: 8, O, 1 for RTU
16: 8, E, 2 for RTU
17: 8, O, 2 for RTU
'0' '1'
30H 31H 32H
'8' '9'
38H 39H 41H
1 2 3
7-data bits
10-bits character frame
1 2 3
7-data bits
10-bits character frame
12.1-09-2
Chapter 12 Description of Parameter SettingsCP2000
'2' '3' '4'
33H 34H
'A' 'B' 'C'
42H 43H
4 5 6
4 5 6
'5' '6'
35H 36H
'D' 'E'
44H 45H
Stop
Stop
bit
bit
Even
Stop
parity
bit
'7'
37H
'F'
46H