09 - 02 Transmission Fault Treatment

Settings

00 Warn and keep operating

01 Warn and RAMP to stop

02 Warn and COAST to stop

03 No warning and keep operating

Chapter 5 Parameters|VFD-B Series

Factory Setting: 03

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

Settings

0.0 ~ 60.0 sec

0.0 Disable

Unit: 0.1

Factory Setting: 0.0

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

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>

Factory Setting: 00

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

Revision July 2008, BE16, SW V4.08 & V5.00

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