Siemens: Programmable Controllers - S7-200
Communication

Integrated PPI interface as S7-200 system bus or as freely programmable interface – for connecting printers, barcode scanners etc.
From CPU 222 upwards PROFIBUS-capable via PROFIBUS DP slave module
From CPU 222 upwards functionality as AS-Interface master via AS-Interface module
EM 241 modem module with integrated complete functions for PLC communications such as remote maintenance, telecontrol, remote diagnostics, reporting, remote data transmission

Speedy PROFIBUS connection

All 222-series CPUs upwards can be run via the EM 277 communications module as a norm slave on the PROFIBUS DP with a transmission rate of up to 12 Mbit/s. This open feature of the S7-200 to higher-level PROFIBUS DP control levels ensures you can integrate individual machines into your production line. With the EM 277 expansion module, you can implement PROFIBUS capability of individual machines equipped with S7-200.

Fast access via the Internet and Ethernet

Fast configuration, programming and monitoring via Ethernet from a central location can save time and money. For example, the Internet module CP 243-1 IT was designed to provide an easy universal PLC link via FTP to various computers for access via the Internet.

Take the Ethernet module CP 243-1 which can be used to quickly access S7-200 process data via Ethernet for archiving or further processing. STEP 7-Micro/WIN configuration support in this environment guarantees easy commissioning and convenient diagnostics. OPC makes open data exchange with PC applications possible.

Powerful AS-Interface connection

The CP 243-2 turns series-222 CPUs upwards into powerful masters on the AS-Interface. According to the new AS-Interface specification V 2.1, you can connect up to 62 stations, making even analog sensors easy to integrate. In accordance with the new AS-Interface specification, you can also connect up to 248 DIs + 186 DOs in the maximum configuration. The max. number of 62 stations can include up to 31 analog modules. The configuration of the slaves and reading/writing of data is supported by the handy AS-Interface Wizard.

Modem communications

The S7-200 CPUs can be accessed nearly anywhere in the world by modem via wired network or radio.

Teleservice: the modem communication option is useful for avoiding expensive service calls. Two modems are all you need for remote use of the complete range of functions such as program transfer, status or control; the communications tools are integrated as a standard feature. External PCMCIA modems can be used as local modems.
Telecontrol: you can call up messages and measured values via modem as well as define new setpoints or commands. In this case, one head-end can control a nearly unlimited number of tributary stations. The protocols for data transmission are freely selectable, e.g. for sending SMS messages directly to a cell phone or fault message to a fax machine. Preparations are being made to handle other protocols.

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