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4 X 2 SCSI MATRIX SWITCH
a. Baud rate internally selected for 9600 or 19200 baud. (Factory default is 9600
baud.)
b. Transmit and receive set for 8 data bits, 1 stop bit, no parity.
c. Serial interface operates in half-duplex mode.
d. i.e.: MODE COMx 9600,N,8,1
The sequence for communicating with the SCSI Switch is defined as:
a. Start sequence:
ascii “cr”,”/”, “/”
b. Switch box number:
Box 1 - “7C” ( | )
Box 3 - “7E” ( ~ )
Box 2 - “7D” ( } )
Box 4 - “7F” ( del )
c. Port Select:
Port A1 - “A1”
Port B1 - “B1”
Port A2 - “A2”
Port B2 - “B2”
Port A3 - “A3”
Port B3 - “B3”
Port A4 - “A4”
Port B4 - “B4”
NOTE
1. More than one port can be selected when transmitting to port A or B.
(For example, to select A1, A3, B2, and B4, transmit “A13B24”.)
2. “0” clears all ports (for example, “A0” clears all ports connected to
port A).
d. Transmit Data to SCSI Switch:
Ascii “K” - Selects desired ports.
NOTE
If a port (A or B) is not specified, no action will be taken to that port. If a
port is selected (A1), that port will be selected and other A ports (2, 3,
and 4) will be turned off.
Summary of Contents for SC122A
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