136
MULTIPORT SPOOLER VIII (4-, 8-, and 12-Port Models)
D.2.3 C
OMMAND
F
ORMAT FOR
D
AISYCHAINING OR
C
ASCADING
Multiple Multiport Spooler VIII units may be daisychained or cascaded
(connected together—see
Section 7.4
). So long as there are not more than
nine MPS-VIII units between the source PC and the destination MPS-VIII, you
can send a command to any MPS-VIII in the chain or cadcade by using the
token in the command line. This is the template for the format of a command
in a daisychained or cascaded system:
@@/n
@
Description:
@@
Command-Start Characters
/
Slash (first half of command)
n
Token (a number from 0 to 9 that represents the number of
MPS-VIII units between the source PC and the destination
MPS-VIII)
Letter (second half of command)
Parameter (if required)
@
End-of-Command Character
Example
@@@/4P3@
The token (the number 4) indicates that the P3 command passes through the
first four Multiport Spooler VIII units and is interpreted by the fifth. The fifth
unit will execute /P3 (a port-redirection command).
NOTE
It is important that the timeout on the output port be longer than on the
input port of the next Multiport Spooler VIII unit to allow the detection of
the end of each task. See the entry for the
Time-Out
parameter in
Section 4.7.2
.
You can send grouped commands (see
Section D.2.2
) when you
daisychain or cascade by typing them one after the other in a single
string. However, to send all commands in the string to the chosen unit,
the token must be included in each command in the string (for example,
@@/4P8/4T6@).
Summary of Contents for PI750A
Page 119: ...111 APPENDIX A Cable Pinouts IBM AT to MPS VIII DB9M to DB25M...
Page 173: ...NOTES...
