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Modbus (slave) --- rtu / ascii mode – Delta Electronics Network Device DOP-A/AE/AS User Manual

Page 103

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Delta DOP Series HMI Connection Manual|DOP-A/AE/AS Series

1-102

Revision January, 2008, Doc. Name: 2007PDD23000007

Modbus (Slave) --- RTU / ASCII mode

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A. HMI factory settings

Baud rate: 9600, 7, EVEN, 1. (ASCII)

9600, 8, EVEN, 1. (RTU)

Controller station number: 0. (Station number is not used in the protocol.)

Control area/status area: W40100 / 40200.

NOTE

1) HMI station number is Slave station number. (default setting is 0)

2) The relation between Modbus address and HMI internal registers.

Modbus address

Data definition in HMI

W40001 ~ W41024

$0 ~ $1023

Internal register

W42001 ~ W43024

$M0 ~ $M1023

Non-volatile internal register

W44001

RCPNO

Receipt number register

W45001 ~ ...

RCP0 ~ RCPn

Receipt register

B00001 ~ B01024

$2000.0 ~ $2063.15

Internal register (Bit)

B01025 ~ B02048

$M200.0 ~ $M263.15

Non-volatile internal register (Bit)

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

Contacts

Read/Write Range

Contact type

Format

Word No.

Bit No.

Discrete Outputs

Bn

N/A

n: 1 ~ 2048

C. Connections (Connector Pinouts)

Please refer to 1.1 Pin Definition of Serial Communication for detail.