Revision A
June 2009
13
Part 2: Software
Program Storage
All programmed data in the PDU 4/4 is stored in non-volatile memory in the event of a power failure.
The PDU 4/4 will return each port to its previous state (on or off) when power returns to the unit.
Note: Many PC-based communications packages offer the ability to buffer the
serial data that has been entered and displayed, so that it may be copied and saved
to a file. In this case, you can keep a copy of the programmed data for your
reference, if required.
Communicating with the PDU 4/4
Programming the System
The PDU 4/4 uses a simple serial user interface. It accepts commands from a serial terminal or terminal
emulation package. The command language also provides status information upon request.
In order to enter any command function, the user must gain access to the PDU 4/4 COMMAND MODE
by entering a password to log on. Each command is completed by pressing the „Enter‟ or „Carriage
Return‟ (<CR>).
Note:
In this manual, pressing „Enter‟, „Return‟ or <CR> represent the same
action.
Programming Access
Once connected to the PDU 4/4‟s
CONTROL IN
serial port, the following access and programming
commands may be used. Invalid commands or unauthorized access attempts will not affect the PDU
4/4. The programming interface will automatically log out after 5 minutes of idle time.
1. Connect your programming terminal to the
CONTROL IN
port.
2.
Press „Enter‟ or <CR> on the keyboard to establish communication. Your display should show
“
Password:
”.
If you do not get the
Password
prompt (or any other activity), check your connections and your
terminal‟s configuration.
Содержание PDU 4/4
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