Siemens SIMATIC Distributed I/O System DP/ASi Link Service Manual download pdf (Page 30)

3-4

Distributed I/O System DP/ASi Link

EWA 4NEB 710 6055-02b

3.3 Configuration with T Connector and with Power Supply Connector

In a configuration with a power supply connector and a T connector, the DP/

ASi link is connected by means of a T connector to the PROFIBUS-DP.

The power supply is gated by means of the power supply connector with the

PROFIBUS-DP in a single cable.

A slave station can be disconnected at any time from the bus without the ”bus

traffic” being interrupted for the other slave stations.

The power supply is fed along the bus cable, i.e. an external power supply of

the slave station is not required.

The degree of expansion with a PS connector is limited (refer to section 3.4).

You use cables of different design for the installation:

 If you wish to use prefabricated Siemens cables, please turn to sec-

tion 4.4.4.

 If you wish to prepare your own cables, please turn to section 4.4.7.

Fig. 3-3 shows a possible installation for the configuration with a power sup-

ply connector and with a T connector:

External

power supply

PROFIBUS-DP

cntr

DP/ASi link

Figure 3-3 PROFIBUS-DP and power supply looped through by means of T

connector

Definition

Advantage

Constraint

Cables

Installation

Configuration Options

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Siemens SIMATIC Distributed I/O System DP/ASi Link Service Manual Page 30