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VFD-L Series
VFD-L can be setup 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. 9-04.
Code Meaning:
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
ASCII code
Character
ASCII code
RTU mode:
Each 8-bit data is the combination of two 4-bit hexadecimal characters. For example,
64 Hex.
2.Data Format:
2.1 10-bit character frame (For 7-bit character):
'0'
'1'
'2'
30H
31H
32H
'8'
'9'
'A'
38H
39H
41H
( 7 .N .2 : P r. 9 - 0 4 = 0 )
S ta rt
0
1
2
b it
7 - b i t c h a r a c te r
1 0 - b i t c h a r a c te r f r a m e
( 7 .E .1 : P r.9 - 0 4 = 1 )
S ta rt
0
1
2
b it
7 - b i t c h a r a c te r
1 0 - b i ts c h a r a c te r f r a m e
( 7 .O . 1 :P r. 9 - 0 4 = 2 )
S ta rt
0
1
2
b it
7 - b i t c h a r a c te r
1 0 - b i t c h a r a c te r f r a m e
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'3'
'4'
33H
34H
'B'
'C'
42H
43H
S to p
S to p
3
4
5
6
b it
b i t
E ve n
S to p
3
4
5
6
parity
b i t
O d d
S to p
3
4
5
6
parity
b i t
5-42
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
'5'
'6'
'7'
35H
36H
37H
'D'
'E'
'F'
44H
45H
46H
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