AS 488/TM systems for new plants exclusively with distributed I/Os on the PROFIBUS-DP can also be installed in SIMATIC PCS 7 cabinets. The SIMATIC S7/M7 installation guidelines also apply to this version (see Catalog ST PCS7.A, add-ons for the SIMATIC PCS 7 process control system).
Customers can select between two CPUs with different perfor- mance levels for all design versions of the AS 488/TM:
•SIMATIC M7 CPU 486-3 with approx. 150% of the performance of an AS 235
•SIMATIC M7 CPU 488-3 with approx. 270 - 300% of the perfor- mance of an AS 235
A commissioning terminal based on PC/programming device can be used for commissioning of the AS 488/TM. The terminal is connected via a serial interface to the respective AS 488/TM and offers the user the same GUI and syntax as known from the AS 235. Because of the serial interface, not all HMI requirements can be fulfilled. Furthermore, the commissioning terminal is not suitable for operation/configuring of another AS using the
AS bus configuration channel.
PROGRAF AS+/NT is a convenient configuring tool for the
AS 488/TM automation systems. It is compatible with all AS 23x systems. PROGRAF AS+/NT executes on an appropriate PC/programming device with Windows NT/2000/XP operating system and connection to the CS 275/PROFIBUS-TM system bus. PROGRAF AS+/NT permits the creation of an online config- uring station for AS 488/TM on the TELEPERM M system bus. On the CS 275 system bus, PROGRAF AS+/NT additionally offers HMI facilities corresponding to local operation of an AS 235.
■Highlights
Classification in the TELEPERM M system environment
Note:
Some of the communications partners/systems referred to below are no longer available or no longer marketed. Reference to the systems in the context "Classification in the TELEPERM M sys- tem environment" does not permit any conclusions to be made on their availability.
•Communications capability with existing systems and I/O modules
All automation systems and operator systems of the TELEPERM M process control system can be operated on the CS 275 system bus. Only the current AS 488/TM and PCS7/TM-OS systems as well as the AS 388/TM and OS 525 systems which are no longer actively marketed can be operat- ed on the PROFIBUS-TM system bus. Communication specific to TELEPERM M between bus stations on different system bus- es is possible via a CS-L2 bridge. The AS 388/TM and
AS 488/TM systems respond on the system bus like an AS 235 system with compatible functions compared to the PCS7/TM-OS or OS 525 system. The AS 488/TM automation system can communicate with the following TELEPERM M sys- tems:
-AS 388/TM or AS 488/TM automation systems on the PROFIBUS-TM system bus, or AS 215, AS 220 S/K/H,
AS 230, AS 230 K, AS 235, AS 235 H, AS 235 K, AS 488/TM on the CS 275 system bus
-OS 525, OS 525 Local or PCS7/TM-OS operation and moni- toring systems on the PROFIBUS-TM system bus, or CS 275, OS 252, OS 262, OS 265, OS 520 on the CS 275 system bus
-Engineering systems: personal computer with the PROGRAF AS+/NT program package, personal computer or ES 500 with the PROGRAF AS+ program package, on the CS 275 or PROFIBUS-TM system bus
AS 488/TM
-Other systems
SIMATIC PCS 7, SIMATIC S7, SIMATIC S5 and systems from other vendors via the DP bus PROFIBUS-DP, the coupling bus PROFIBUS-AG/AG, or via a 3964R serial coupling with TM module 6DS1 333-8AB.
•Limitations in communication
-The response of the AS 488/TM and AS 388/TM systems in a homogeneous network with approved TELEPERM M stations on the CS 275 or PROFIBUS-TM system bus (AS 235,
OS 525, PCS7/TM-OS etc.) maps the AS 235 system with the exception of CD mode (e.g. for data formats and block names on the bus). CD couplings (without acknowledgment) for AKx/BKx blocks are not implemented in the AS 388/TM and AS 488/TM systems. When carrying out migration or when importing user structures, the CD couplings must there- fore be removed prior to loading into the automation system. Note:
When communicating with other stations (e.g. systems from other vendors) via the N-AT interface module on the CS 275, not all functions of the AS 388/TM and AS 488/TM react iden- tically to those in an AS 235 system. In individual cases, it must be checked from the viewpoint of the other systems pri- or to connection of an automation system to the system bus whether the required communications functions can be im- plemented with the AS 388/TM or AS 488/TM systems.
-Use of the STRUK-AS 220 EA program via the system bus is not released for the AS 388/TM and AS 488/TM systems.
-Use of the AS bus configuring channel for operation/configur- ing of another AS using a commissioning terminal is not re- leased because of the serial communications mode of the commissioning terminal.
-Communication to the process I/Os is carried out via serial PROFIBUS-DP interfaces. These are operated according to the standard protocol. If devices from other vendors are con- nected, these must comply with the PROFIBUS-DP standard, and their data interfaces must be completely described.
AS 388/TM and AS 488/TM automation systems each have two PROFIBUS-DP interfaces.
-The AS 488/TM communicates with existing I/O modules from the TELEPERM M range via a special interface module and the parallel I/O bus interface (ribbon cable) in the TELEPERM M cabinets.
-The process image is automatically generated by the inter- face module, and this module must therefore recognize the connected I/O modules. Only those modules and systems listed in the Section "Migration of existing systems" or pub- lished on the Internet "AS 488/TM configuration list" can be used.
•Non-migratable systems
The AS 488/TM automation system does not offer a compatible replacement for the fault-tolerant AS 235 H automation system; migration would only be possible with relinquishing of the re- dundancy. Furthermore, the FM 100 field multiplexer must con- tinue to be operated on existing AS 230 / AS 235 automation systems.
