Configuring The Terminal Emulator; Running The Example Program - Siemens SIMATIC S7-1200 System Manual

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Configuring the terminal emulator

You must set up the terminal emulator to support the example program. You can use most

any terminal emulator on your PC, such as HyperTerminal. Make sure that the terminal

emulator is in the disconnected mode before editing the settings as follows:

1. Set the terminal emulator to use the RS232 port on the PC (normally COM1).

2. Configure the port for 9600 baud, 8 data bits, no parity (none), 1 stop bit and no flow

3. Change the settings of the terminal emulator to emulate an ANSI terminal.

4. Configure the terminal emulator ASCII setup to send a line feed after every line (after the

user presses the Enter key).

5. Echo the characters locally so that the terminal emulator displays what is typed.

To exercise the example program, follow these steps:

1. Download the STEP 7 program to the CPU and ensure that it is in RUN mode.

2. Click the "connect" button on the terminal emulator to apply the configuration changes

and open a terminal session to the CM 1241.

3. Type characters at the PC and press Enter.

The terminal emulator sends the characters to the CM 1241 and to the CPU. The CPU

program then echoes the characters back to the terminal emulator.

S7-1200 Programmable controller

System Manual, V4.2, 09/2016, A5E02486680-AK

Communication processor and Modbus TCP

13.3 Point-to-point (PtP) communication