Transmitter and Receiver
can be sent using RS232 or RS485 cable, modem, Ethernet network or wireless
transmitters and receivers. Specific configurations and parts lists
are described in our Networking
Alpha Signs manual. Alpha Ethernet networks as used in manufacturing
facilities with Gateway, Modbus, Profibus and DeviceNet are described
Alpha Signs - Manufacturing Supplement.
common connectivity options are RS232 and RS485. To use either of
these options, one or more of the following items are required:
Port -- The computer must have at least one available Serial
Port, Modem or Network Adapter to communicate to the message center(s).
or RS485 Items
can be used with all AMS message centers.
Box -- If you have more than 32 AMS message centers or more
than 4,000 feet of cable on your network, you may find it necessary
to use a Repeater Box.
can be used with all AMS message centers, except the BetaBrite.
Ethernet Adapter Kit
MSS100 Ethernet Adapter
MSS485 Ethernet Adapter
-- To communicate via modem, your computer must have a modem, and
a modem is required at each remote location. Your computer can have
either an Internal Modem or an External Modem with a Serial Modem
Cable. In the remote location, it must be an External Modem permanently
set to "Auto Answer." The RS232 Serial Modem Cable at the remote site
is a specially designed cable. The type of Serial Cable connected
to the External Modem in the remote site depends on (1) the number
of AMS message centers at the remote location, (2) the model of the
AMS message centers there, and (3) the distance between the modem
and the display, if a single AMS message center is installed. You
may order the appropriate cables from Alpha-American Programmable
Signs, or you may make your own. Schematic cable diagrams and pin-out
connections are provided in the Networking
Alpha Signs manual. An analog phone line and phone jack must
be installed near each modem.
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