Emerson FG-110 Pin MDI Signal Pinout Standard Ethernet Cable, Modbus serial RS232 / RS485

Models: FG-110

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Softing Linking Device –

Manual for Configuration, Installation and Maintenance

Hardware Installation

The Ethernet port corresponds to the standards IEEE 802.3 100BASE-TX/10BASE-T and supports auto negotiation.

The pin assignment corresponds to MDI (Medium Dependent Interface).

Pin

MDI Signal Pinout

 

(Standard Ethernet Cable)

 

 

1

TD+

 

 

2

TD-

 

 

3

RD+

 

 

4

Not used

 

 

5

Not used

 

 

6

RD-

 

 

7

Not used

 

 

8

Not used

 

 

Table 2.4-1 Ethernet Pins

2.5 Modbus

2.5.1 MODBUS TCP

The FG-110 FF is able to communicate with the HSE (High Speed Ethernet protocol of Fieldbus Foundation) and Modbus TCP over the same Ethernet port.

2.5.2 MODBUS serial (RS232 / RS485)

The FG-110 FF provides a serial interface based on RS232.

The connection is made using a 9-pin male D-sub connector with the following pin layout:

Pin #

Pin #

Signal

Description

Connector

Connector 2

 

 

1

 

 

 

 

 

 

 

1

1

Reserved

Do not connect

 

 

 

 

2

3

RXD

Receive Data

 

 

 

 

3

2

TXD

Transmit Data

 

 

 

 

4

4

Reserved

Do not connect

 

 

 

 

5

5

GND

Signal Ground

 

 

 

 

6

6

Reserved

Do not connect

 

 

 

 

7

7

Reserved

Do not connect

 

 

 

 

8

8

Reserved

Do not connect

 

 

 

 

9

9

Reserved

Do not connect

 

 

 

 

Table 2.5-1 COM PIN Allocation

But mostly the units are connected to the Linking Device by the Interface RS485.

The FIM-110 FF offers a solution with a serial converter RS232 to RS485 (9185 see “Stahl Manual”) of the company Stahl. For detailed information please follow the user guide of

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Emerson FG-110 Pin MDI Signal Pinout Standard Ethernet Cable, Modbus serial RS232 / RS485, Pin # Signal Description

FG-110 specifications

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