Siemens SIMATIC Ident Function Manual page 87

Diagnostics using LEDs
The following figure shows details of the LEDs of the RF180C.
Figure A-4
Table A- 7 Status LEDs for the RF180C
LEDs
ON
24 V DC
ACT_1, ACT_2
ERR_1, ERR_2
PRE_1, PRE_2 *
RxD_1, RxD_2
*) In multitag operation, this LED uses a flashing interval to indicate the number of data carriers currently within the range
of the reader.
FB 45 for MOBY U, MOBY D, RF200, RF300
Function Manual, 07/2012, J31069-D0166-U001-A4-7618
LEDs of the RF180C
Lights up when the RF180C has completed start-up without errors.
Lights up when the 24 V supply voltage is connected to the RF180C.
The corresponding reader is active in processing a user command.
A flashing pattern indicates the last error to occur (see section "Error messages (Page 47)").
Indicates the presence of a tag.
Indicates live communication with the reader. May also indicate malfunctions on the reader.
Brief description of the hardware
Meaning
A.2 RF180C
87