Siemens S7-400 ユーザーズマニュアル

7-5

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

Table 7-2

LEDs of the IM 4632

LED EXTF (red)

Lights up in the event of an external fault. Chain 1 or chain 2 has a
fault (power supply failed in the EU; terminating connector missing;
wire break, or interface selector switch wrongly set).

LED C1 (green)

Chain 1 (via front connector X1, connection 1) is in order.

LED C2 (green)

Chain 2 (via front connector X2, connection 2) is in order.

Front connector X1
and X2

Connector plug (output) for chain 1 and chain 2.
X1 = upper front connector; X2 = lower front connector

Table 7-3

LEDs of the IM 463-2

C1 ON

You use only interface C1.

C2 ON

You use only interface C2.

C1, C2 ON

You use both interfaces.

C1, C2 OFF

You use neither of the two interfaces.
You do not want to operate an S5 EU at present.

Table 7-4

Switch Position: Interface Selector of the IM 463-2

100

Cable length 1 to 100 m

250

Cable length 100 to 250 m

450

Cable length 250 to 450 m

600

Cable length 450 to 600 m

Danger of data loss.

Changing the setting of the interface selector switch and the cable length selector
switch in RUN mode can result in loss of data.

Change the settings of these switches only in STOP mode of the CPU.