System Introduction
2–20
1070 072 262-101 (01.09) GB
2.3
CON550
The module CON 550 is an Ethernet switch for the CL550 system. It provides
eight 10/100-Base-T interfaces with automatic recognition and automatic
switching between the transfer rates:
D
2 interfaces on the frontside for communication with other stations in the
network.
D
6 interfaces on the backside for communication with other modules of the
basic device.
2.3.1
Operating Elements and Displays
LED red: Error
LEDs green: Link (L)
Transmit/Receive (T/R)
LEDs green: Link (L)
Transmit/Receive (T/R)
Slide switch for X72: cross wiring
direct wiring
Ethernet Interface X72
Ethernet Interface X71
Rotary switch: Rack ID
The red Error LED is off during normal operation. After Power on, during the
self test, it is lit. After a successful self test, the LED must go off, otherwise the
module must be changed.
The rack ID of the CL550 is set with both the 10-steps rotary switches.
The eight Ethernet channels on the CON550 module have been assigned
two LEDs each:
D
The left LED (”L”) shows the physical connection to a data terminal
(ZS550, external switch, etc.). It must always be lit.
D
The right LED (”T/R”) shows the data traffic on the channel.
The slide switch determines whether the X72 connection is provided with a
data terminal assignment (even: MDI) or a slide switch assignment
(crossed: MDI-X).