Operator controls and indicators on the send IM
Table 6-12
Operator controls and indicators on the send IM
LEDs
Meaning
EXTF LED (red)
Lights up in the event of an external fault. Line 1 or line 2 is faulty (terminator missing
or broken cable)
C1 LED (green)
Line 1 (via front connector X1, connection 1) is correct.
C1 LED (flashing
green)
An EU in the line is not ready for operation because:
● The power supply module is not switched on
● A module has not yet completed the initialization process
C2 LED (green)
Line 2 (via front connector X2, connection 2) is correct.
C2 LED (flashing
green)
An EU in the line is not ready for operation because:
● The power supply module is not switched on
● A module has not yet completed the initialization process
The LEDs EXTF, C1 and C2 do not light up if the terminator is not inserted or the line is
interrupted when in POWER ON mode. In this case the IM 460 identifies an unoccupied
interface.
Operator controls and indicators of the receive IM
Table 6-13
Operator controls and indicators of the receive IM
LEDs
Meaning
INTF LED (red)
Lights up if a rack number > 21 or = 0 was set.
Lights up if you have changed the rack number under voltage.
EXTF LED (red)
Lights up in the event of an external fault (line fault, for example, if the terminator
is not inserted or if a module has not yet completed the initialization process,
or if the CC is switched off)
DIP switch
DIP switch to set the number of the mounting rack.
Front connector X1
Upper connector (input) for the cable from the previous interface module.
Front connector X2
Lower connector (output) for the cable to the next interface module or for the
terminator.
Parameter assignment
Using the DIP switch on the front panel of the module, you must set the number of the mounting
rack in which the receive IM is installed. The permitted range is 1 to 21.
If required, you can change the distance setting for the line on the programming device using
STEP 7.
The default setting for the distance is 600 m.
Interface modules
6.5 Interface modules IM 460-4; (6ES7460-4AA01-0AB0) and IM 461-4; (6ES7461-4AA01-0AA0)
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
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