User's Manual

Siemens PLT 130
.
1994
5/2
SY--TRANS 300 CS gateway
Description
Bild 5/1 SY--TRANS 300 CS gateway
Application
The SY-TRANS 300 CS gateway enables bidirectional data
transfer at high rates between participants on the CS 275 bus
system and computers connected to an Ethernet bus (LAN ac-
cording to IEEE 802.3). The standard network protocols which
are alternatively available are TCP/IP, DECnet or SINEC H1 (ISO
transport).
Design
The gateway comprises the basic hardware and a software
component which handles the communication server function in
the computers connected to the LAN.
The basic device
contains
-- an AT-compatible basic PC module,
-- the local bus interface module N-AT as the interface to the CS
275 bus system and
-- the CP 1413 communications processor for SINEC H1
or
an interface module for the Ethernet bus.
A power supply
unit is used for DC 24 V oder AC 115 to 230 V.
The system software
is present as firmware in EPROMs and
need not be loaded. The software is different depending on the
required network protocols.
As a result of the housing depth, the basic device can only be
installed hanging vertically with the front panel upwards in
TELEPERM M standard cabinets (also those with depth of
600 mm).
Connections
The CS 275 interface
is connected via a cable for 20-m local
bus (cf. page 4/15). The transition to the CS 275 remote bus can
be made via the remote bus connection unit F AE (page 4/11) or
-- in the case of cabinet installation -- via the remote bus connec-
tion subrack S5 (page 4/12)
The SINEC H1 interface
is connected via a 15-pin sub-D plug
according to the SINEC H1 guidelines (cf. Catalog IK 10 ”Indu-
strial Communications Networks”).
The Ethernet interface
with TCP/IP or DECnet is available via a
BNC plug and also via a 15-pin AUI plug
1
). Thin-wire or thick-
wire cables can be used for the connection.
The thin-wire cable is connected via BNC plugs -- via a T-con-
nector when looping through -- if a BNC connection is also pre-
sent on the computer . If the computer only has an AUI connec-
tion, a transceiver is required for each transition from AUI to
thin-wire.
The software component is a communications server (client/ser-
ver architecture) with a simple communication interface to the
user: the library OPEN CS. This contains command procedures
and library routines and can be executed in the computer under
one of the following operating system platforms:
VMS, OPEN VMS, ULTRIX, OSF/1, UIX, SUN OS, SINIX, SCO
UNIX, MS-DOS, Windows NT (others on equiry).
The network protocols TCP/IP, DECnet or SINEC H1 (ISO trans-
port)canbeusedintheLAN.
User applications in the computer can be readily linked to auto-
mation systems of the TELEPERM M process control system
using simple library calls. The following AS automation systems
can be communications partners: AS 230
2
), AS 230 K
2
), AS
235, AS 235 K und AS 235 H.
Library calls are offered as standard for the following CS 275
functions:
-- Y- s t a r t u p
-- Read parameters
-- Write parameters
-- Receive AKS, BKS und MKS messages.
The library OPEN CS can also be extended by further CS 275
functions for specific projects.
Further functions have already been implemented which permit
the design of a fault-tolerant system.
1) AUI = Attachment Unit Interface.
2) These automation systems are no longer available.
Created with "Chameleon CMYK PDF Creator" for Wolfgang Strozyk at Siemens AG
This catalog is out of date, see note on page 2