User Manual Part 3

Communication modules
7.3 ASM 456
SIMATIC RF300
7-30 System Manual, Release 04/2006, J31069 D0166-U001-A2-7618
7.3.4 Diagnosis using LEDs
The following figure shows details of the LEDs of the ASM 456.
Figure 7-23 LEDs of the ASM 456
Table 7-9 Status LEDs for ASM 456
LEDs Meaning
*
ON Lights up when there is logic voltage at the ASM (is generated by the 24 V
supply voltage.)
24 V DC Lights up when the 24 V supply voltage is connected to the ASM.
ACT_1, ACT_2 The corresponding reader is active in processing a user command.
ERR_1, ERR_2 * A flashing pattern indicates the last error to occur.
PRE_1, PRE_2 ** Indicates the presence of a transponder.
RxD_1, RxD_2 Indicates live communication with the reader. May also indicate malfunctions on
the transponder.
*) The meaning of the individual flash patterns and the associated fault descriptions can be found in
the relevant FB and FC documentation.
**) In multitag mode, this LED uses a flash interval to indicate the number of data media currently
within the range of influence of the reader.