Functional Description

A Linking Device consists of one head station and at least one power link module for establishing the

connecton of PROFIBUS PA Segments to PROFIBUS DP. PROFIBUS is standardized accorting to EN 50

170/2. The head station supports all there defined transfer rates from 45.45 kBit/s up to 12 MBit/s.

The head station provides one channel. Up to 5 power link modules can be connected to one channel.

Each power link module creates a new segment.

The communication between the head station and the Power Link Modules is realized via removable

terminal blocks.

The communication is transparent. Each PA-subscriber is planned like a PROFIBUS DP subscriber and each

PA device is directly addressed like a DP slave device. The head station and the power link modules don’t

need to be planned.

It is allowed to mount the head station, and the power link modules within zone 2.

The channels are working with 31.25 kBaud (Manchaster coded). This saves from additonal time delay

within the Power Link Modules.

For detailed information please refer to the User Instructions Linking Device LD 800P

(3BDD011704R0101).

Accessories

For PROFIBUS PA applications ABB Automation Products offers the following accessories:

■ Power Link Module PL 810 without intrinsically safe interface

■ Power Link Module PL 890 with intrinsically safe interface

■ User Instructions Linking Device LD 800P (3BDD011704R0101)