Siemens AS 235 Benutzerhandbuch

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Siemens PLT 111 · 1999
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TELEPERM M
Introduction
Brief description
Functions of the AS 235 system
The AS 235, AS 235 H and AS 235 K automation systems pro-
vide all I & C functions such as measurement, supervision, cal-
culation, closed-loop control and open-loop control, also 
particularly taking into account batch processes. The automa-
tion systems also handle the tasks for local operation and moni-
toring, e.g. display, signalling, alarm output, process operation 
and logging.
The AS 235 and AS 235 K only differ in their design. The AS 235 
system is fitted in a cabinet, the AS 235 K system in a wall hous-
ing. The AS 235 H system with a redundant central unit is pro-
vided for applications with particularly high availability de-
mands.
A large range of dedicated function blocks is available for solv-
ing I & C tasks in the AS 235, AS 235 H and AS 235 K automation 
systems. “Programming” of the automation systems is thus 
made extremely simple since the function blocks present in the 
system memory need only be activated by entering configuring 
instructions and parameters.
In addition, the AS 235, AS 235 H and AS 235 K permit the use 
of additional languages for special tasks - such as optimization, 
startup and shutdown of open-loop controls - which are difficult 
to solve using the existing function blocks or the batch functions. 
The TML process language (TELEPERM M Language) is avail-
able for analog and binary processing operations, as well as the 
STEP M control language already known from the SIMATIC 
industrial automation system. TML/STEP M can be used to 
define new function blocks optimally tailored to the respective 
task. Despite an extremely high degree of freedom, the clear 
and transparent “Block technology” is not relinquished. Fre-
quently occurring block combinations can be combined into so-
called Typicals and can then be used just like a single block.
A wide range of input and output modules is available for the 
AS 235, AS 235 H and AS 235 K systems as the interface to the 
process.
Intelligent I/O modules, e.g. modules which can carry out 
closed-loop control functions on their own, make it possible to 
configure a subordinate individual single-loop control level. This 
increases the availability of the automation system even further.
Further to this, the process interface is supplemented in particu-
lar for power applications or distributed small systems by sys-
tem-compatible coupling of SIMATIC components.
The AS 235, AS 235 H and AS 235 K systems have either one or 
two autonomous operation channels for local operation and 
monitoring. This means that the process operation keyboard, 
process monitor and printer can be connected to each of the two 
operation channels and carry out operation and monitoring func-
tions independent of one another. 
In addition to the standardized displays which are achieved by 
addressing the automation function blocks without carrying out 
any further configuring, the user can also configure free dis-
plays. A standardized display is e.g. the loop display for opera-
tion of a control loop, a free display is the schematic representa-
tion of plant components (flowcharts) in their respective process 
status.
The local operation devices may be omitted when using central 
operation and monitoring in a network configuration.
Configuring
Configuring includes the incorporation of the automation struc-
ture into the automation system by using configuring instruc-
tions, by specifying parameters, by programming with TML and 
STEP M if applicable, and the feedback documentation. 
This is possible either without an additional programming 
device/personal computer directly on the automation system 
(direct configuring, input/output using lists) or by using a 
PROGRAF AS+ engineering tool on a programming device/PC. 
Both configuring methods can be used 
• locally for one automation system or 
• centrally from one AS 235 system or one PC with 
PROGRAF AS+ for bus-coupled systems.
Fig. 1/1 System configuration for the TELEPERM M process control system, with migration to the SIMATIC PCS 7 process control system
AS
388/TM
AS 414/
AS 416 / AS 417
AS
488/TM
AS
488/TM
TELEPERM M
I/O modules
WinCC/TM-OS
operator
terminals
Terminal bus
Bridge
CS 275
PROFIBUS-TM
WinCC/TM-
OS server
incl. WinCC/TM-CS 275
WinCC/TM-
OS server
incl. WinCC/TM-
PROFIBUS
OS server
SIMATIC
PCS 7
WinCC/TM-OS
operator
terminals
SIMATIC PCS 7
operator
terminals
PROFIBUS-DP
PROFIBUS-DP
PROFIBUS-DP
PROFIBUS-DP
TELEPERM M
SIMATIC PCS 7
PROGRAF AS+
configuring
software
TELEPERM M
I/O modules
ET 200M
AS 235
This catalog is out of date, see note on page 1