Communication; Serial Communication - Meridian Net-960CE-S Hardware Manual

Communication

Serial Communication

The Net-960CE-S provides up to four serial communication ports for serving various
internal and external devices. Two RS232 communication ports are provided by
default with one pair of hardware handshake control signals. You can optionally
order either:
• two additional RS232 ports, or
• one additional RS232 and one additional SAE J1708 port.
Each of these ports provides different options, as described in the sections that
follow.
Serial Port 1 (SER1 Connector)
Serial Port 1 is one of the two RS232 communication ports provided by default for
communication. Generally, it functions as a main system serial port for modem
communication. It provides a maximum Baud rate of 115,200bps and one pair of
communication control handshake signals (CTS/RTS). It can provide either of the
following two functions, as determined by factory settings:
• Basic Terminal Configuration (SER1 Connector): In its basic terminal
configuration, Serial Port 1 is physically connected to the SER1 connector and
provides the control signal CTS/RTS.
• Internal Cellular Modem Terminal Configuration: In this configuration,
Serial Port 1 is connected internally to the cellular modem and is not connected
to the external serial connector. Refer to the Cellular Communication section on
page 31 and in the Serial Port 1 (SER1 Connector), on page 42 for more details.