Delta Electronics none manual Modbus CommunicationsASDA-AB Series

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Chapter 8 MODBUS CommunicationsASDA-AB Series

0302H

Default: 0

Communication

Range: 0~8

Protocol

Settings:

 

0: Modbus ASCII mode, <7,N,2>

 

1: Modbus ASCII mode, <7,E,1 >

 

2: Modbus ASCII mode, <7,O,1>

 

3: Modbus ASCII mode, <8,N,2 >

 

4: Modbus ASCII mode, <8,E,1>

 

5: Modbus ASCII mode, <8,O,1>

 

6: Modbus RTU mode, <8,N,2>

 

7: Modbus RTU mode, <8,E,1>

 

8: Modbus RTU mode, <8,O,1>

 

 

This parameter is used to set the communication protocol. The alphanumeric characters represent the following: 7 or 8 is the number of data bits; N, E or O refer to the parity bit, Non, Even or Odd; the 1 or 2 is the numbers of stop bits.

0303H

Transmission Fault

Treatment

Default: 0

Range: 0~1

Settings:

0:Display fault and continue operating

1:Display fault and stop operating

This parameter is used to determine the operating sequence once a communication fault has been detected. If '1' is selected the drive will stop operating upon detection the communication fault. The mode of stopping is set by parameter P1-32.

0304H

Communication Time

Out Detection

Watch Dog Timer (It is not recommended to change the factory default setting if not necessary)

Default: 0

Range: 0~20 sec.

The factory default setting is set to 0 and it indicates this function is disabled.

When this parameter is set to any value over 0, it indicates that the timer is enabled. The value set in this parameter is the communication time and the communication time out detection should be completed within the time. Otherwise, a communication error will occur.

For example, if the value set in this parameter is 5, it indicates that the communication time out detection will be activated once in five seconds or a communication error will occur.

0305H

Communication

Mode

Communication selection: Default: 0

Range: 0~2 Settings:

0:RS-232

1:RS-422

2:RS-485

Multiple communication modes RS232, RS-485, RS-422 cannot be used within one communication ring.

8-6

Revision March 2008, Doc. Name: 2007PDD23000011

Page 249
Image 249
Delta Electronics none manual Modbus CommunicationsASDA-AB Series