Managed Ethernet Switch Modules; Overview; Managed Ethernet Switch Module Hardware - GE L90 Instruction Manual

3 HARDWARE

3.4MANAGED ETHERNET SWITCH MODULES

The type 2S and 2T embedded managed switch modules are supported by UR-series relays containing type 9S CPU mod-
ules with revisions 5.5x and higher. The modules communicate to the L90 through an internal Ethernet port (referred to as
the UR port or port 7) and provide an additional six external Ethernet ports: two 10/100Base-T ports and four multimode ST
100Base-FX ports.
The Ethernet switch module should be powered up before or at the same time as the L90. Otherwise, the switch
module will not be detected on power up and the
issued.
NOTE
The type 2S and 2T managed Ethernet switch modules provide two 10/100Base-T and four multimode ST 100Base-FX
external Ethernet ports accessible through the rear of the module. In addition, a serial console port is accessible from the
front of the module (requires the front panel faceplate to be open).
The pin assignment for the console port signals is shown in the following table.
Table 3–6: CONSOLE PORT PIN ASSIGNMENT
PIN SIGNAL
1 CD
2 RXD
3 TXD
4 N/A
5 GND
6 to 9 N/A
RS232
console port
Figure 3–46: MANAGED ETHERNET SWITCHES HARDWARE
GE Multilin
EQUIPMENT MISMATCH: ORDER CODE 500

3.4.2 MANAGED ETHERNET SWITCH MODULE HARDWARE

DESCRIPTION
Carrier detect (not used)
Receive data (input)
Transmit data (output)
Not used
Signal ground
Not used
FRONT VIEW
L90 Line Current Differential System
3.4 MANAGED ETHERNET SWITCH MODULES
Two 10/100Base-T
ports
Four 100Base-FX
multimode ports
with ST connectors
Independent power
supply. Options:
2S: high-voltage
2T: low-voltage
REAR VIEW
842867A2.CDR

3.4.1 OVERVIEW

self-test warning will be
3
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