Chapter 5 Parameters
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VFD-B Series
Revision July 2008, BE16, SW V4.08 & V5.00
5-83
09 - 02
Transmission Fault Treatment
Factory Setting: 03
Settings
00
Warn and keep operating
01
Warn and RAMP to stop
02
Warn and COAST to stop
03
No warning and keep operating
This parameter is set to how to react if transmission errors occur.
See list of error messages below (see section 3.6.)
09 - 03
Time-out Detection
Unit: 0.1
Settings
0.0 ~ 60.0 sec
Factory Setting: 0.0
0.0
Disable
If Pr.09-03 is not equal to 0.0, Pr.09-02=00~02, and there is no communication on the bus
during the Time Out detection period (set by Pr.09-03), “cE10” will be shown on the keypad.
09 - 04
Communication Protocol
Factory Setting: 00
Settings
00
Modbus
ASCII
mode, protocol <7,N,2>
01
Modbus ASCII mode, protocol <7,E,1>
02
Modbus ASCII mode, protocol <7,O,1>
03
Modbus RTU mode, protocol <8,N,2>
04
Modbus RTU mode, protocol <8,E,1>
05
Modbus RTU mode, protocol <8,O,1>
1. Control by PC or PLC
A VFD-B 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
