Communications support modules
Hardware - SIMADYN D 6-31
Edition 12.2004
6
6.8 Communications module SS4
6DD1688-0AD0
The following serial interfaces (data transfer protocols) can be
implemented using the SS4 communications module:
Protocol Application
DUST1 Connecting configuring- and operator control PCs,
e. g. to load the program mode and for start-up (commissioning)
DUST2 Connecting a message printer
DUST3 Connecting SIMATIC S5 (AS 512 or CP 525)
USS Connecting
• OP2 operator control panels
• VD1 text displays
• drive converters to the process coupling;
The SS4 is USS master and can be operated on the USS bus.
Max. baud rate: 187.5 kbaud
The communications module is a plug-in module for the CS7 support
module. The CS7 support module, the communications module and its
selected receptacle are configured using HWConfig. A maximum of 3
communication modules can be inserted on the CS7.
Data is transferred with the CPU modules via a 16 kbyte dual port RAM
which is located on the CS7 support module.
The configurable SS4 interface has, as standard an RS 232 physical
interface to connect to the COM interfaces of a PC.
Other physical interfaces can be selected using an optional interface module
which can be inserted on the SS4:
Interface
module
Physical interface
(signal level along the cable)
Application
SS1 20 mA line current (TTY) Long data transfer lines;
interrupted lines can be reliably
identified
SS2 RS 232 („V.24“) For printers with control signals
(RTS, CTS)
SS31 RS 485 USS protocol
The maximum baud rate is 187.5 kbaud and is dependent on the associated
protocol software and if relevant, the interface modules used (refer under
interface modules).
6.8.1 Connecting programmers or PC
Connecting cables for PG740, PG750 or PG770 programmers can be
assembled using the SM8 parts set (for SS4) or an appropriate parts set for
Order No.
Description
CS7
plug-in module
Physical interface
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