Black Box SWI030A, Руководство пользователя

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18
POW-R-SWITCHES 1M, 1S
After you have installed and tested your Pow-R-Switch system, it should be
ready for operation. (Note that the PC, modem, or other control device must
send ASCII characters at the same data rate as the Pow-R-Switches. Also, the
Pow-R-Switches can
receive data with any type of parity, but will always transmit
data using 8 bits, no parity.)
The command character-string that you will use to control the Pow-R-Switch
consists of nine contiguous (not separated by spaces) ASCII characters. The
first six characters are ASCII control codes that constitute a “fixed password”
that restricts access to the Pow-R-Switch system. The seventh character is the
specific or wild-card address of the Switch(es) that will receive the command,
and the eighth character is the code for the operation (what you want the
Switch to do). The last character in the command string is an ASCII carriage
return (“^M”).
1. Establish a connection to the Pow-R-Switch 1M. If you are contacting it
across a modem link, the Pow-R-Switch 1M will wait for eight seconds
after the attached modem raises Carrier Detect, then respond with the
“PRS READY” message.
2. Send the ASCII command string for what you want the Pow-R-Switch
system to do. The command string must be in this format:
^B^X^X^B^X^Xac^M
Where:
^B^X^X^B^X^X
is the Pow-R-Switch’s fixed password.
“^B” is an abbreviation for the [CTRL] [B]
character (the ASCII control code [STX]
that you can generate by pressing the
[CTRL] and [B] keys simultaneously).
“^X” is an abbreviation for the [CTRL] [X]
character (the ASCII control code [CAN]
that you can generate by pressing the
[CTRL] and [X] keys simultaneously).
4. Operation