Delta VFD-B Series

Chapter 5 Parameters_VFD-B Series
5-92
Revision 10/2005, BE13, SW V4.08
09 - 02
aTransmission 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
aTime-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
aCommunication 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: