Chapter 12 Description of Parameter SettingsME300
12.1-09-2
5: 7O2 (ASCII)
6: 8N1 (ASCII)
7: 8N2 (ASCII)
8: 8E1 (ASCII)
9: 8O1 (ASCII)
10: 8E2 (ASCII)
11: 8O2 (ASCII)
12: 8N1 (RTU)
13: 8N2 (RTU)
14: 8E1 (RTU)
15: 8O1 (RTU)
16: 8E2 (RTU)
17: 8O2 (RTU)
Control by PC (Computer Link)
When using the RS-485 serial communication interface, you must specify each drive’s
communication address in Pr.09-00. The computer then implements control using the drives’
individual addresses.
Modbus ASCII (American Standard Code for Information Interchange): Each byte of data is the
combination of two ASCII characters. For example, one byte of data: 64 Hex, shown as ‘64’ in
ASCII, consists of ‘6’ (36Hex) and ‘4’ (34Hex).
1. Code Description
The communication protocol is in hexadecimal, ASCII: “0” … “9”, “A” … “F”, every hexadecimal
value represents an ASCII code. The following table shows some examples.
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
2. Data Format
10-bit character frame (For ASCII):
(7, N, 2)
Start
bit
01
2
3456
Stop
bit
7-data bits
10-bits character frame
Stop
bit
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