Siemens SIMATIC S7-400 Reference Manual page 335

6.3 Interface modules IM 460-1 (6ES7460-1BA01-0AB0) and IM 461-1 (6ES7461-1BA01-0AA0)
C2 LED (green)
C2 LED (flashing
green)
Front connectors
X1 and X2
The LEDs EXTF, C1 and C2 do not light up if 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 6-9
INTF LED (red)
EXTF LED (red)
5 VDC (green)
DIP switch
Front connector
X1
Modules can be damaged.
If you want to connect an ER via the IM 461-1 interface module and use a power supply
module in this ER, you might damage the modules.
Do not use a power supply module in an ER that you want to connect to the CR via the IM
461-1 interface module.
Parameter assignment for the mounting rack number
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.
Setting/changing the number
Proceed as follows:
1. Set the power supply module in the CR to the
2. Enter the number using the DIP switch.
3. Switch the power supply module on again.
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
LEDs
Line 2 (via front connector X2, connection 2) is correct.
A module has not yet completed the initialization process.
Connector (output) for line 1 and line 2
X1 = upper front connector; X2 = lower front connector
Operator controls and indicators of the receive IM
LEDs
Lights up if a rack number > 21 or = 0 was set.
Lights up if you have changed the rack number under voltage.
Lights up in the event of an external fault (line fault, for example, if a module has
not yet completed the initialization process but not when the CC is switched off)
Power supply in the ER is correct.
DIP switch to set the number of the mounting rack.
Upper connector (input) for the cable from the previous interface module.
CAUTION
Meaning
Meaning
position (Output voltage 0 V).
Interface modules
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