S7-400 Automation System Module Data
Reference Manual, Edition 09/2009, A5E00850736-06
403
RS 485 repeater
10
10.1 Introduction
Overview
This section describes the RS 485 repeater in detail.
This includes:
● The purpose of the RS 485 repeater
● The maximum cable lengths between two RS 485 repeaters
● Functions of the various operating elements and terminals
● Information about grounded and ungrounded operation
● Specifications and the block diagram
Further information
You will find further information on the RS 485 repeater in the section "Configuring of an MPI
or PROFIBUS-DP Network" of the manual
Hardware and Installation
.
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