RS232 an X2

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HMIs, human machine interfacesEagle ET/MT-3x6...Connection ofRS-485 to X2

 

The X2 and X3 ports of our HMIs provide you with the option of using an RS-422 or an RS-485 bus, depending on the wiring. Below is an example of how this works with an RS-485.

 

The RS-485 (today: EIA-485) provides a data transfer interface with differentiated signals. Please note that the RS-485 bus is a bi-directional interface. This means that the interface sends and receives data. Connected devices therefore have to ensure communication can take place.

 

The following illustration shows how it should be connected to the interface:

 

X2_X3_RS-485-Bus

 

Hinweis

Pins 1-5, 2-6, 3-7, 4-8 are already internally connected.

 

Hinweis

The maximum length of the data transmission cable is 1000m.

 

Typical Cable connection to 9185 Fieldbus Isolating Repeater via 15pin plug:

isolate

RxD-B  1

TxD-A  2

GND 13

PE

CablePining_IEA485_USB

6  nc.

/ ISP+

3  A-

8  B+

5  GND

/ nc

Case

Teminal X2

Shield

Plug

 

nc = not connected

ISP+, only 9185/11-35-10

 

See also:

Kapitelseite RS 485 Informationen

Kapitelseite X2, RS-232, RS-422 und RS-485

 

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