Em 277 Configuration Options - Siemens SIMATIC S7-200 System Manual

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S7-200 Specifications

Table A-18 list the configurations that are supported by the EM 277 PROFIBUS-DP

module. The default configuration for the EM 277 module is two words of input and

two words of output.

Table A-18 EM 277 Configuration Options

Configuration

The location of the input and output buffers may be configured to be anywhere in

the V memory of the S7-200 CPU. The default address for the input and output

buffers is VB0. The location of the input and output buffers is part of the parameter

assignment information that the master writes to the S7-200 CPU. The master

must be configured to recognize its slaves and to write the required parameters

and I/O configuration to each of its slaves.

Use the following tools to configure the DP master:

For SIMATIC S5 masters, use COM PROFIBUS Windows software

For SIMATIC S7 masters, use STEP 7 programming software

For SIMATIC 505 masters, use COM PROFIBUS and either TISOFT2 or

For detailed information about using these configuration and programming

software packages, refer to the manuals for these devices. For detailed information

about the PROFIBUS network and its components, refer to the ET 200 Distributed

I/O System Manual .

Inputs to Master

Outputs from Master

S7-200 Programmable Controller System Manual

Data Consistency

Word Consistency

Byte Consistency

Buffer Consistency

A5E00066097-02

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