System Manual

Table Of Contents
Readers
5.4 SIMATIC RF340R/RF350R
SIMATIC RF300
System Manual, 07/2017, C79000-G8976-C345-07
151
5.4.1.3
Pin assignment of RF340R RS422 interface
Pin
Pin
Device end
8-pin M12
Assignment
1
+ 24 V
2
- Transmit
3
0 V
4 + Transmit
5
+ Receive
6
- Receive
7
Unassigned
8
Earth (shield)
5.4.1.4
LED operating display
The operational statuses of the reader are displayed by the LEDs. The LED can adopt the
colors green, red or yellow and the statuses off
, on , flashing :
Table 5- 12 LED operating display on the reader
LED
Meaning
The reader is turned off.
Operating voltage present, reader not initialized or antenna switched off
Operating voltage present, reader initialized and antenna switched on
Operating mode "with presence": Transponder present
Operating mode "without presence": Transponder present and command
currently being executed
There is an error. The number of flashes provides information about the cur-
rent error. You will find more information on error messages in the section
"System diagnostics (Page 413)".
5.4.1.5
Ensuring reliable data exchange
The "center point" of the transponder must be situated within the transmission window.

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