Modbus to Ethernet Bridge

Table 1

Front Panel Components (See Figure 4)

 

 

 

 

 

 

 

Item

Component

Name

Purpose

 

1

Wire terminal

RxD or Rx ±

Modbus signal:

 

 

 

RS±232: RxD (Receive Data)

 

 

 

RS±422.485: RxD± (Receive Data ±)

2

Wire terminal

CTS or Rx +

Modbus signal:

 

 

 

RS±232: CTS (Clear to Send)

 

 

 

RS±422/485: RxD+ (Receive Data +)

 

 

 

 

3

Wire terminal

RTS or Tx +

Modbus signal:

 

 

 

RS±232: RTS (Request to Send)

 

 

 

RS±422/485: TxD± (Transmit Data +)

4

Wire terminal

TxD or Tx ±

Modbus signal:

 

 

 

RS±232: TxD (Transmit Data)

 

 

 

RS±422/485: TxD± (Transmit Data ±)

5, 6, 7

Wire terminal

NC

No connection

8

Wire terminal

GND

Modbus signal ground

9

Reset switch

RST

Push to reset and initialize Bridge

10

LED (Red)

Fault or

ON: Fault in Bridge communication

 

 

Configuration

(or) Bridge is in Configuration Menu

11

LED (Green)

Ready

ON: Bridge is ready for communication

 

 

 

on both ports

12

LED (Yellow)

Active Ethernet

Flashing: Indicates activity at Bridge's

 

 

 

Ethernet port

13

LED (Green)

Link Good

ON: Bridge has good connection at

 

 

 

Ethernet port

14

Connector (RJ45)

Ethernet port

RJ45 connector for Ethernet 10BaseT

 

 

 

cable

 

15

Connector (RJ45)

Modbus port

RJ45 connector for Modbus RS±232 or

 

 

 

RS±485 cable

16

LED (Yellow)

Modbus Tx

Flashing: Indicates transmission or

 

 

 

upload at Modbus port

17

LED (Yellow)

Modbus Rx

Flashing: Indicates reception at Modbus

 

 

 

port

 

18

Switch

Modbus interface

UP:

Modbus port is RS±232

 

 

selection

DOWN:

Modbus port is RS±422/485

19

Wire terminal

DC +

Operating power, positive

20

Wire terminal

Ground

Earth ground

21

Wire terminal

DC ±

Operating power, negative

22

Wire terminal

Ground

Earth ground

15

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Image 15
Quantum 890 USE 155 manual Component Name Purpose