Delta AH500 series User Manual download pdf

Doc. Name:

Setting MODBUS RS-485 communication for Delta products

Rev.: 00

Doc. Code:

134A-P-D1410-APN002-EN

Page 1/11

Topic: Setting MODBUS RS-485 Communication for Detla Products

Applicable model

AH500 series, DOP series, DVP series, IFD9506, RTU-EN01, TP series, AFE2000 series,

APF2000 series, ASDA-A series, ASDA-B series, ASDA-AB, ASDA-S series, DMV series, CTA

series, DT3 series, DTA series, DTB series, DTC series, DTE series, DTV series, DVW series,

HES series, HMC series, IED series, REG2000 series, VFD series

Keyword MODBUS RS-485, communication timeout, delay time

1. Description

The application note provides the information about setting a RS-485 communication timeout and a RS-485 delay time

for a Delta industrial automatic product for users. In order to increase communication efficiency, and shorten the time for

adjustment, the users can set a RS-485 communication timeout and a RS-485 delay time according to Table 1.

2. Setting the MODBUS RS-485 Parameters in a Delta Industrial

Product

When a MODBUS master station is connected to slave stations, the MODBUS master station sends commands to the

slave stations. The slave stations rely according to the commands they receive. Owing to the fact that there are

difference in response time and character, communication errors may occur. To meet the time that each slave station

needs, the communication timeouot and the delay time in the master station can be adjusted. If the time that the slave

station need is different, the communicaiton timeout and the delay time in the master station will be the maximum

communication timeout and the maximum delay among the slave stations.

2.1 Setting MODBUS RS-485 Parameters

This section provides the information about setting a communication timeout and a delay time for the Delta MODBUS

master station which is connected to slave stations. Please refer to Table 1 for more information.

Table 1 Table of communication timeouts and delay times

Setting a communication timeout and delay for a master station (ms)

AH500 series DVP series DOP series IFD9506/7 RTU-EN01

Timeout *Delay Timeout *Delay Timeout Delay Timeout Delay Timeout Delay

AH500 > ST 1 > ST 1 >ST 1 > ST 1 > ST 1

AFE2000 15 20 15 20 15 20 15 20 15 20

APF2000 15 20 15 20 15 20 15 20 15 20

ASD-A2R 5 4 5 4 5 4 5 4 5 4

ASDA-A 5 4 5 4 5 4 5 4 5 4

ASDA-A+ 5 4 5 4 5 4 5 4 5 4

ASDA-A2 5 4 5 4 5 4 5 4 5 4

ASDA-AB 5 4 5 4 5 4 5 4 5 4

ASDA-B 5 4 5 4 5 4 5 4 5 4

ASDA-B2 5 4 5 4 5 4 5 4 5 4

ASDA-M 5 4 5 4 5 4 5 4 5 4

ASD-S 5 4 5 4 5 4 5 4 5 4

CTA 305 20 305 20 305 20 305 20 305 20

DMV1000 2005 1 2005 1 2005 1 2005 1 2005 1

DMV2000 10 1 10 1 10 1 10 1 10 1

Slave station

DOP-B 30 50 30 50 30 50 30 50 30 50

DPM-C530 1175 2000 1175 2000 1175 2000 1175 2000 1175 2000

1 2 3 4 5 6 ... 10 11