Siemens AS 488/TM manual

This catalog is out of date, see note on page 3

Introduction

AS 488/TM

■Overview

The AS 488/TM automation system based on the

SIMATIC M7-400 hardware platform combines the advantages of a modern hardware generation with the AS 235 functionality of the TELEPERM M process control system proven in numerous applications. It is suitable for automation of continuous process- es or also of recipe-based batch processes.

The functions of the AS 488/TM system software are compatible with the G system software of the previous AS 235 system. Thus you can continue to use existing application software of the AS 220 / AS 230 / AS 235 automation systems with its standard function blocks, user function blocks, TML programs and STEP M programs. AS 220 application software, however, must first be converted (service is part of migration offer).

The AS 488/TM automation system is available in four different versions:

•AS 488 with modular, standard packaging system for connec- tion at the rear according to the SIMATIC guidelines

•AS 488 S cabinet system for installation in TELEPERM M cabi- nets with 19" packaging system (cabinets not included in scope of delivery of AS 488 S, they must be ordered as options if required from Catalog PLT 111)

•AS 488, installed in SIMATIC PCS 7 cabinets (only with exclu- sive use of distributed SIMATIC I/Os; see Catalog ST PCS7.A, Add-ons for the SIMATIC PCS 7 process control system)

•AS 488 K compact system for installation in TELEPERM M wall housings or cabinets

The AS 488 K compact system and the AS 488 S cabinet system provide numerous possibilities for system expansion and mod- ernization by replacement of TELEPERM M automation systems which are no longer available or marketed, with a simultaneous increase in the AS performance. The completely equipped AS 488 K / AS 488 S basic systems which have been pretested by means of a switch-on test can be individually adapted by nu- merous options, and ideally integrated into an existing system environment. System integration is carried out using so-called migration racks (MIG I / MIG II with AS 488 S and MIG K with AS 488 K). The migration rack is simultaneously the interface to the TELEPERM M I/Os in the extension units of the TELEPERM M cabinets and in the ES 100 K extension systems. Up to five I/O modules can be directly inserted into the MIG II and MIG K migration racks just like in the basic unit of an AS 235 or

AS 235 K.

As with the AS 230 / AS 235, up to three extension units can be operated in the basic cabinet on I/O bus A of an AS 488 S as well as an external ES 100 K. Up to four extension units of an AS 230 / AS 235 extension cabinet can be connected to an AS 488 S via I/O bus B if the ribbon cable for the I/O bus is re- placed. During migration off the AS 488/TM it is therefore possi- ble to add a fourth extension unit to a maximally configured AS 235 extension cabinet. Limitation of the number of migratable I/O modules does not therefore exist for an AS 230 / AS 235 con- figured with the maximum number of TELEPERM M I/O modules.

The AS 488 K with its MIG K migration rack offers the same packaging system as an AS 235 K. The MIG K migration rack has five slots for TELEPERM M I/O modules. The serial coupling known from the AS 235 K permits connection of 2 x 4 ES 100 K compact extension systems. These can be positioned up to 500 m away from the AS 488 K automation system, and are therefore highly suitable for a distributed configuration.

In addition to the migration of existing TELEPERM M I/Os, all ver- sions of the AS 488/TM automation system can also be extended by distributed I/Os on the PROFIBUS-DP. In addition to the

ET 200M system with a comprehensive range of I/O modules specially designed for process engineering, it is also possible to use the SIMATIC ET 200B, ET 200S, ET 200iS, ET 200X and ET 200U I/O systems (the latter is no longer actively marketed). It is additionally possible to operate a wide range of devices possessing a DP interface on the PROFIBUS-DP of the

AS 488/TM. For example, DP interfaces integrated in the

CPU modules of the SIMATIC S7-300 permit a simple slave con- nection to the AS 488/TM. Using gateway modules on the PROFIBUS-DP (DP/PA link, DP/AS-i link, DP/DP coupler), it is also possible to access the PROFIBUS-PA and AS-Interface fieldbuses and the I/O buses of SIMATIC PCS 7, S7-300, S7-400 or systems from other vendors.

The homogeneous interfacing of the distributed SIMATIC I/Os forces distribution close to the process. Significant cost savings are therefore achieved for the process I/Os as well as for field wiring and routing.

The AS 488 S is optimized for installation in TELEPERM M cabi- nets with 19" packaging system, and therefore particularly suit- able for the migration or expansion of existing TELEPERM M systems. The system is mounted on the front cabinet members. The TELEPERM M installation guidelines are applicable with re- spect to the CE marking wherever TELEPERM M I/O modules are operated in an AS 488 S. On the other hand, the SIMATIC S7/M7 guidelines apply to an AS 488 S exclusively operating with distributed I/Os on the PROFIBUS-DP.

1/4 Siemens PLT 112 · 2002