Programming   
6.3 Programming via the RS232 interface 
  SIMATIC RF1000 
36  Operating Instructions, 11/2019, C79000-G8976-C432-06 
6.3  Programming via the RS232 interface 
When the RF1040R/RF1070R readers are connected to a SIMATIC controller, 
communication takes place via the freeport protocol. The freeport protocol allows you to 
communicate with the reader directly on the lowest level. A USB connection is not required 
for this. 
The telegrams are listed in a byte coding in the following sections; you can apply the byte 
coding directly to the user program of the controller. 
The communication parameters of the RS232 interface of the reader are set as follows in the 
factory:  
●  Data bits: 8 
●  Parity: None 
●  Stop bits: 1 
●  Transmission speed: 115.2 kBd 
 
Connection via a communications module or serial module 
The reader can be connected to a SIMATIC controller using a communications module with 
RS232 interface (e.g. RF170C). With a connection via the CM, you need to set the 
communication parameters of the CM as follows: 
Table 6- 18  Setting options in the "Module parameters" parameter group of the CM when using the 
freeport protocol 
User mode  Ident profile/RFID stand-
ard profile 
Selection of the block with which you want to 
assign parameters to the reader. 
MOBY mode  Freeport protocol  The parameter value "Freeport protocol" must 
be selected in this parameter. 
Transmission  
115.2 kBd  The parameter value "115.2 kBd" must be se-
lected in this parameter. 
Diagnostic 
messages 
None 
Selection of whether hardware diagnostics mes-
sages are reported. 
Suppression of  
error LED 
None 
Channel 1 
Selection of whether the error LED (ERR) of a 
channel is suppressed. 
Interface  RS232  The parameter value "RS232" must be selected 
Alternatively, the connection can be made using a serial module with RS232 interface and 
P2P communication (e.g. ET 200SP CM PTP).