Nematron Pointe Controller - Manual (Page 323)

Pointe Controller User Guide Appendix B: Flow Chart Command Reference
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B.5 Serial Commands
The Serial commands are used to initiate serial communications through the
Pointe Controller I/O system.
NOTE: Read/Write commands do not normally block or wait. Read gets all bytes
which have been buffered on the port; write queues the byte(s) for output. The
command does not wait until the characters are physically transmitted.
About COM Ports
The Pointe Controller unit has one serial port built into the base unit itself, and
more ports can be added by installing a
Dual Port RS232 Serial module (OL2602)
in one of the unit’s slots.
The built-in port is COM Port 0. The rest of the port numbers are determined by
which slot the OL2602 module is installed in:
Controller Slot 1 2 3 4 5 6 7 8
Top COM Port 1 3 5 7 9 11 13 15
Bottom COM Port 2 4 6 8 10 12 14 16
As such, if you had an OL2602 module installed in slot 4, then the top port would
be COM Port 7 and the bottom port would be COM Port 8.
NOTE: If you attempt to use a COM Port number that does not exist – because no
OL2602 module is installed in that slot – then the Pointe Controller will return a
Status Tag error.
B.5.1 Serial Configure Port
This command can be selected from the Serial commands list.
When used in a Flow Chart, the Serial Configure Port command configures the
specified COM port for serial communications.