Shihlin electric SDE-100A2 User Manual

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8.3. Modbus protocol
When communication between a computer and several drives is going to be performed, every
drive should be set its device number. Then the computer could control individual drive according to its
device number. The protocol of Shihlin drive is standard Modbus protocol. There are two modes :
ASCII(American Standard Code for information interchange) mode and RTU (Remote Terminal Unit)
mode，users could change the mode by setting the PC22 value.
A. ASCII mode
(a) Coding signification
A 8-bit data(a byte) is expressed with 2 ASCII character. For example, 75h is expressed with
ASCII code “37h” and ASCII code “35h”.The ASCII codes „0‟ to „9‟ and „A‟ to „F‟ are listed below.
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
(b) Frame signification
11-bit frame (suitable for 8-bit data length)
10-bit frame (suitable for 7-bit data length)

Shihlin electric SDE-100A2 Specifications

General

Brand	Shihlin electric
Model	SDE-100A2
Category	DC Drives
Language	English