Siemens CS 275 manual SY-TRANS 300 CS gateway, Description

This catalog is out of date, see note on page 2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 FAE (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) can be used in the LAN.

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-startup

-- 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.

5/2 Siemens PLT 130 . 1994