Siemens SIMATIC RF1070R Manuel - Page 31

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5 Useful information

5.2

Project engineering of the S7 station with the CM1241

RS232 communication module

Note

In this example, the communication module is dynamically parameterized via the

user program. This chapter is only for reference on how you can also

parameterize the CM1241 RS232 via the hardware configuration in TIA Portal.

This chapter shows the required configuration steps in order to create a project

with a SIMATIC S7-1200 CPU, the CM1241 RS232 and the SIMATIC RF1070R

reader.

1. Create a new STEP 7 project.

2. Configure the S7 station:

–

CPU 1214C DC/DC/DC

Note:

A different S7-1200 CPU from the SIMATIC product range can also be

used as an alternative.

–

CM1241 RS232

3. Open "Devices & Networks" and select the CM1241 RS232 communication

module.

4. Switch to "Device view > Properties > General > RS-232 interface"

and

adjust the module parameters as shown in the following figure.

–

Transmission speed: 115.2 kbps

–

No parity

–

8 data bits

–

1 stop bit

–

No flow control

Note

Calling "Port_Config" overwrites the settings of the hardware configuration.

Reading out UID with SIMATIC RF1070R

Article ID: 109780625,

V1.0,

09/2020