Siemens SIMATIC NET SCALANCE X-300M Compact Operating Instructions page 30

Assembling
4.4 Installation of modular devices
Remember the orientation of media modules.
On modular devices, there are always two module slots arranged opposite each other.
Remember the correct orientation when installing MM900 media modules.
Example:
• The first MM900 media module is installed in slot 3.
• The second MM900 media module installed in slot 4 must be turned through 180
The permitted operating temperature is decided by the fully equipped device (switch +
media module + SFP transceiver).
With modular devices, it is not only the switch that decides the permitted operating
temperature of the overall device but also the temperature ranges of the MM900 media
modules and the SFP transceivers. You will find details in the technical specifications of the
relevant components.
The following aspects can restrict the maximum permitted operating temperature:
• The orientation of the carrier device.
• The use of SFP transceivers.
• The use of transceivers of the types LH, LH+ or ELH.
Note
Slot number
With modular devices, the MM900 media modules must be given a slot number.
The slot number labels are supplied with the modular devices.
30
CAUTION
degrees.
Compact Operating Instructions, 10/2014, A5E02630801-06
SCALANCE X-300M