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Delta DOP Series HMI Connection Manual|DOP-A/AE/AS Series
Revision January, 2008, Doc. Name: 2007PDD23000007 1-101
Modbus nW (Master) --- RTU / ASCII mode Back to Table
A. HMI factory settings
Baud rate: 9600, 7, EVEN, 1. (ASCII)
9600, 8, EVEN, 1. (RTU)
Controller station number: 1.
Control area/status area: W40100 / W40200.
NOTE
1) This driver can read consecutive communication address on the screen via one Modbus command to
improve the communication efficiency. For example, if there are 6 devices on the screen, and read the
data of the addresses W40100, W40101, W40102, W40200, W40201, W40300. It will read three times.
It will read W40100 3 Words at the first time, read W40200 2 Words at the second time and read
W40300 1 Word at the third time.
2) Ensure to check the box next to “Optimize” (Optimization for reading) selection in “Communication” tab in
the “Configuration” dialog box in “Options” menu (Options Æ Configuration Æ Communication). If
“Optimize” selection is unchecked, do not select “Data Length Limit”.
B. Definition of controller Read/Write address
Registers
Read/Write Range
Register Type Format
Word No. Bit No.
Data length
Output Registers Wn n: 40001 ~ 50000 N/A Word
Input Registers Wn n: 30001 ~ 40000 N/A Word
¾
Input Registers is “read only”.
Contacts
Read/Write Range
Contact type Format
Word No. Bit No.
Discrete Outputs Bn N/A n: 1 ~ 10000
Discrete Inputs Bn N/A n: 10001 ~ 20000
¾
Discrete Inputs is “read only”.
C. Connections (Connector Pinouts)
Please refer to 1.1 Pin Definition of Serial Communication for detail.