4-10
Communications
Communications
Communication
interface setup
Communications Settings is where instrument-specific information is entered to allow
the 4400 to communicate to external devices using the optional Isolated
Communications
Module assemblies or modem (see related information on Chapter 9
Downloading Events).
Continued on next page
Action... Result...
STEP 1: From the Instrument
Settings Setup Menu screen, press
Communications.
• Press Enable
Communications
to
activate/deactivate the
communications port. External
communication devices connect to
the 4400 mainframe via the optical
serial data port. The optical serial
data port connector is located on
the left side of the instrument.
• Press to enter the communications
Device Address from 01 to 32 for
use with the optional Fiber Optic
to Ethernet adapter.
• Select the corresponding Baud
Rate to set connection speed.
Default baud rate is 11520.
• Press External Modem
Connected if you want to activate
communications via an external
modem. Press Change to modify
the modem initialization string.
The string must begin with “AT”.
Dranetz recommends using
the same brand and model of
modem at both ends of the
communications link. See Chapter
9 Downloading Events for
instructions on modem
connections.
• Press IP to configure your
Ethernet settings and allow the
4400 to operate on the network.
Proceed to Step 2 on page 4-11.
• Press OK to accept changes in
communications settings.
• Press Cancel to discard changes in
communications settings and
return to Instrument Settings
menu.
MARK159
NOTE: For instructions on how to physically
connect to NodeLink using the external
communications devices, see Chapter 9
Downloading Events.
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