Table of Contents
Advertisement
PSI BOX Reference
_______________________________________ _
Figure 7-1 The Default Mode 7 Configuration.
DEFAULT IEEE DEVICE NUMBER
DEFAULT IEEE SECONDARY ADDRESS
TIME OUT VALUE
PSI BOX MY LISTEN ADDRESS
PSI BOX MY SECONDARY ADDRESS
PSI BOX MY TALK ADDRESS
END OF INPUT TERMINATION (EOS=)
END OF OUTPUT METHOD (END=13)
RS232 PORT ECHO STATE
EMERGENCY RESET CHARACTER
INTERFACE CLEAR LINE IFC
REMOTE ENABLE LINE REN
ATTENTION LINE ATN
______________________ _
Data Pass Through Mode.
By default any data, that does not start with the BUS
command sequence, is treated as data to passed straight though
the PSI BOX to the current IEEE device.
At the start of the data stream the PSI BOX sends the
current device LISTEN address. Then the current secondary
address, if any. Then the data received from the RS232 host
computer is sent byte by byte. The EOI will be set true
concurrently with a data byte and will be followed by the UNL
command according to the End Of Sequence method specified
by the EOS= command.
Any data that starts with a <Carriage Return> or <Line
Feed> character will be buffered until it has been checked for
the BUS command sequence. Thus the data sequence:-
<CR> BUFFET
will have the three bytes <CR> BU stored by the PSI BOX until
the F character arrives, as this point the PSI BOX determines
that <CR> BUS has not been received from the host RS232
computer. Therefore the PSI BOX sends <CR>BUF to the
current device on the IEEE bus and the later characters FET are
sent as soon as they have been received.
Page 72
Mode 7 Overview
=AS SET BY DIP SWITCHES
=NONE
=10 (1 second)
=00
=NONE
=00
=EOI ASSERTED BY DEVICE
=EOI SENT WITH <CR>
=OFF. ECHO=OFF
=@. DECIMAL 64
=PULSE TRUE>100 micro sec
=ASSERTED TRUE
=ASSERTED TRUE C-A-C
Chapter 7
Advertisement
Table of Contents
