Emerson Bettis RTS Installatie-, Bedienings- en Onderhoudshandleiding - Pagina 7

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Installation, Operation and Maintenance Manual

VCIOM-15517-EN Rev. 0

Section 3: Connection

The connection of the RTS Control Unit to the Modbus TCP is done at the field level

because of the high degree of protection required via 4-pin, D-coded, M12 connectors

(see IEC 61076-2-101). The female side is on the device, and the male side on the cable side.

Two equivalent M12 connectors, which are internally wired to a hub, are located on the

RTS Control Unit with Modbus TCP. With this, a line structure can be implemented. Which

connection is used is irrelevant for the function.

Figure 2

Table 1.

The devices are connected via crossover cables, i.e.:

•

The cable types recommended are standard patch cables (twisted pair, S/UTP, AWG26,

Cat5e). The cable shield has to be connected to the actuator housing over the connector

housing. It is important to ensure that there are no potential differences between the

individual devices in the Modbus TCP network so that no transient currents flow over the

cable shield.

Pin assignment on device side (female side)

Tx+ to Rx+

Tx- to Rx-

Rx+ to Tx+

Rx- to Tx-

Section 3: Connection

July 2021

Function

Tx+

Rx+

Tx-

Rx-