Siemens AS 235 appendix Introduction, Brief description

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TELEPERM M

Introduction

Brief description

TELEPERM M process control system

￿The TELEPERM M process control system provides all functions required for process automation. It is highly suitable for the com- plete automation of continuous and discontinuous (batch) pro- cesses.

The TELEPERM M systems are divided into function units opti- mized for different tasks associated with process automation:

• AS automation systems

• OS operator systems

• CS and PROFIBUS bus systems

AS automation systems

￿The various TELEPERM M automation systems have different designs, ranges of functions and performances. The AS 235, AS 235 H and AS 235 K automation systems described in this catalog are proven and reliable. They can be configured within wide limits and coupled to a wide range of subordinate systems. The AS 235 H additionally has a redundant central unit and thus satisfies particularly high availability demands. The AS 235 sys- tems can communicate with one another and with higher-level systems via the TELEPERM M CS 275 plant bus.

A wide range of TELEPERM M input/output modules is available for connection of the process peripherals (sensors and final con- trol elements) to the AS 235, AS 235 H and AS 235 K automation systems. Some modules have their own processing features or can be configured application-specific.

The AS 388/TM and AS 488/TM automation systems (see Cata- log PLT 112) use the SIMATIC M7-300 and M7-400 automation computers as the hardware platform and are compatible with the AS 235 system. They are appropriate for the extension of exist- ing TELEPERM M systems or for the design of new systems.

The AS 388/TM and AS 488/TM systems can be operated on the PROFIBUS-TM plant bus. PROFIBUS-TM is based on the stan- dardized PROFIBUS. The AS 488/TM system can additionally be operated on the CS 275 plant bus.

ET 200M distributed I/O systems with a comprehensive range of I/O modules can be connected to the AS 388/TM and AS 488/TM systems via one or two PROFIBUS-DP interfaces.

OS operator systems

￿The bus-compatible OS 525 (Catalog PLT 122) and WinCC/TM- OS (Catalog PLT 123) operator systems are used for process communication. They communicate with the subordinate TELEPERM M automation systems and with SIMATIC S5-155U via the CS 275 plant bus or PROFIBUS-TM.

The operator systems can have a configuration variable from a single-user system up to a multi-user system - where the OS basic unit communicates with several terminals via a terminal bus - and can thus cover the complete range from low-end to high-end applications.

The OS 525 Local system permits the design of a local AS oper- ating console with the complete range of OS 525 functions.

Engineering

￿The PROGRAF AS+ configuring software is used for the AS 235, AS 235 H, AS 235 K, AS 388/TM and AS 488/TM automation sys- tems and offers a wide range of support for documentation and configuring by means of a graphic functional diagram editor and an integrated database, amongst others.

Any single-user system WinCC/TM-OS-Single with RC license (Runtime+Configuration) is suitable as the configuring system for WinCC/TM-OS, and an OS 525 single-user system/terminal with OS 525-BIPRO configuring software for OS 525.

Plant bus

￿The plant bus is the central communication component of every distributed process control system. Two different bus systems are available for the TELEPERM M process control system, and can also be combined together within a system:

• CS 275

• PROFIBUS-TM

The CS 275 plant bus which has been proven in many automa- tion plants is predestined for communication between the

AS 235, AS 235 H, AS 235 K and AS 488/TM automation sys- tems and the OS 525 and WinCC/TM-OS operator systems. The CS 275 plant bus functions according to the token passing prin- ciple and can also have a redundant configuration. Several buses can be combined together using bus couplers such that bus networks are produced corresponding to the plant struc- ture. The bus system is provided with distributed control. The bus interface of each subsystem may take over the master func- tion according to specific criteria.

The AS 388/TM and AS 488/TM automation systems and the

OS 525 and WinCC/TM-OS operator systems can be connected to the PROFIBUS-TM plant bus. The PROFIBUS-TM is character- ized in that it complies with the modern PROFIBUS communica- tion standards to EN 50170 but also uses the TELEPERM M communication mechanisms of the CS 275 (AKS, BKS, MKS and PL/PS telegrams) at the user level (link between bus interface and application).

The PROFIBUS-TM plant bus also operates according to the token passing principle. It can be designed as an electrical or optical network. The two network instructions can also be mixed together. PROFIBUS-TM is preferably used for new systems or partial systems.

The CS 275 and PROFIBUS-TM buses can be connected together by a CS-L2 bridge, thus permitting linking of existing systems and new systems.

Note:

Information systems, computers from other manufacturers, per- sonal computers and gateways can be connected to the CS 275 plant bus. Personal computers with the Win TM software pack- age can also be connected to PROFIBUS-TM.

1/2 Siemens PLT 111 · 1999