Siemens SIMATIC RF300 System Manual page 161

5.3.2.3 Pin assignment of the RS-422 interface
Table 5-14
Pin
5.3.2.4 LED operating display
The operational statuses of the reader are displayed by two LEDs. The LEDs can adopt the colors
white, green, red, yellow or blue and the statuses off , on , flashing :
Table 5-15
SIMATIC RF300
System Manual, 02/2021, C79000-G8976-C345-09
Pin assignment
Pin
Device end
8-pin M12
1
2
3
4
5
6
7
8
Display elements
LED Meaning
The reader is turned off.
The reader is turned on and is searching for transponders.
The reader is in the "Setup" mode, in the "Search for transponders" status and has
not yet received a "RESET" command and is not ready.
There is a transponder in the antenna field.
The reader is in the "Setup" mode, in the status "Show quality", has not yet received
a "RESET" command and is not ready.
Depending on the signal strength, the LED flickers or is lit permanently.
The reader has received a "RESET" command.
The reader is turned on, the antenna is turned off.
• Operating mode "with presence": Transponder present
• Operating mode "without presence": Transponder present and command cur‐
rently being executed
There is an error. The number of flashes provides information about the current
error.
You will find more information on error messages in the section "System diagnostics
(Page 425)".
Assignment
+ 24 V
- Transmit
0 V
+ Transmit
+ Receive
- Receive
Unassigned
Earth (shield)
Readers
5.3 SIMATIC RF340R/RF350R
161