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5. Operation
Your PC or Control Device must send ASCII characters at the same data rate as the NPS. The
unit accepts 8 bits no parity, or 7 bits even or odd parity, but will always answer back at
8 bits, no parity.
5.1. Access the NPS Command Mode
In order to invoke commands, the user must first access the NPS Command Mode. Commands
can be sent to the NPS via Network or modem, or from a local PC connected directly to the
Console Port. To access the Command Mode, proceed as follows:
1. Contact the NPS:
a) Via Network: Telnet to the NPS unit's IP Address. For example, assuming the IP
Address is "192.1.1.1", on a UNIX system the Telnet command would be invoked as
follows:
$ telnet 192.1.1.1 [Enter]
Note: If the Telnet connection to the NPS is refused, this probably means that the
unit is busy, or that the IP Security feature has denied the connection.
b) Via Modem: Start your communications program (e.g. ProComm or Hyper
Terminal). Dial the external modem that is connected to the NPS. Wait for the
Connect Message.
c) Via Console Port: Start your communications program (e.g. ProComm) and press
[Enter]. Make certain you are communicating via the COM port connected to the
NPS.
2. Password: If the System password has been defined, a prompt will be displayed. Key in
your System or User Password, and press [Enter].
3. Disconnect: To end the session, type /X and press [Enter] (or disconnect using Telnet
software).
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