Siemens X-400 - Manual (Page 54)

Media Modules, Covers, Dummy Cover
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
54 C79000-G8976-C186-03
4.1.4 Gigabit Media Module MM492-2LD (1000Base-LX)
The MM492-2LD gigabit media module can be inserted as an option in slot 5.
Properties
The media module provides two ports for connecting the single mode FOC. Signal
transmission uses a laser diode at a wavelength of 1310 nm. Both ports of the
module can be configured as ring ports. The maximum cable length is 10 km when
using SIMATIC NET fiber-optic cables.
Connector
SC duplex female connectors are used.
LED Display of the Gigabit Media Module
The LED displays of the module are the same as the LEDs of the basic device.
With optical transmission, only a fixed transmission rate and full duplex mode are
possible. The display in display modes B and C is analogous.
● In display mode A, the current connection status is displayed.
● In display mode B, the fixed transmission rate is displayed.
● In display mode C, the full duplex mode is always displayed.
● In display mode D, you can see whether or not the port is monitored.
F
L 1
L 2
R M
S T B Y
D M 1
D M 2
P 1
P 2 P 1
P 2
P 3
P 4 P 1
P 2
P 3
P 4 P 1
P 2
P 3
P 4 I N 1 / I N 5
I N 2 / I N 6
I N 3 / I N 7
I N 4 / I N 8
2 3 4 1 1 8 9 1 0 7 6 5
Figure 4-5 Slot of the MM492-2LD media module