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PD 660 Simple P-NET Interface RS 485 P-NET

This module has become obsolete. Use PD 661 as a replacement. See note.

General information

The PD 660 Simple P-NET Interface is one of a number of standard modules within the PD 600 series range. Its main purpose is to provide a transparent link between standard RS 485 P-NET and the optical Light-Link P-NET used between other 600 series modules. The module itself does not require any programming or configuration. This module is normally used either when no DPI is included within a cluster of I/O modules and a connection is required with RS 485 P-NET, or a DPI is included, but this has an interface with a standard other than RS 485. The PD 660 device performs a direct (repeater) link between an RS485 network segment and Light-Link, meaning that any modules included in the cluster will be regarded as part of that RS485 network. In other words, no gateway function is involved, as would be the case if the connection were made through a DPI. It is used with a BM 002 base module.

It should be noted, that the highest possible speed on Light-Link is 230400 BAUD, whereas the highest speed on RS 485 is 76800 BAUD. As the PD 660 device performs a direct link between Light-Link and RS 485, the highest possible speed is 76800 BAUD.

PD 660 Block Schematic

The diagram shows connection possibilities for a PD 660

Electrical Specifications

Mechanical Details

Related topics

Base module overview

Wiring diagram

Ordering Information

LED function