Contemporary Control Systems AI-SRVR Servers to Ethernet User Manual - Manual (Page 6)

TD000200-0MC
6
4 Operation
4.1 General Considerations
Configuration is accomplished while the AI-SRVR is connected to a suitable device,
either a computer terminal or a computer running a terminal emulation program such as
HyperTerminal or PuTTy. The connection is made via the AI-SRVR serial port (console
port) which uses standard EIA-232 protocol.
4.1.1 Functions of Operation
The unit has the following two ways of functioning:
In the AI-SRVR Function, the unit performs as an ARCNET server for delivering
ARCNET packets to one or more Ethernet clients.
In the AI-PROXY Function, an ARCNET node can communicate via an Ethernet
backbone to an ARCNET node in a different LAN. This requires two AI-SRVRs
— one
in each ARCNET LAN
— each acting as a proxy for the remote node being represented.
4.1.2 Configuration
To avoid communication difficulties, configuration should be accomplished before the
unit is connected to either the ARCNET or Ethernet network. Whether the unit is
configured by a Telnet session or through its console port, the procedure and the
display screens are the same. However, the screens used for the AI-SRVR Function
differ slightly from those displayed for the AI-PROXY Function.
4.1.3 LEDs
Several LEDs aid in monitoring performance and in troubleshooting:
ARCNET: The RX LED glows green when the unit receives data
from the ARCNET LAN.
The ACT LED flashes yellow whenever the unit’s
CPU and ARCNET chip communicate.
Ethernet: The LINK/ACT LED glows if a valid link exists to an
operating Ethernet device and indicates speed by
colour: green for 100 Mbps and yellow for 10 Mbps.
It flashes to indicate activity.
The DUP LED glows green to indicate full-duplex
operation and yellow for half-duplex.
STATUS: During boot-up, this green LED flashes. Once all files
have loaded
— about 15 seconds on newer units, 50
seconds for older units) — it glows solid to indicate
the unit is operational.