This driver use the Windows COM port
driver to access the COM serial ports.
| Boards
form
|
|
| Board name: |
User
supplied unique name for the board.
|
| Board type: |
COMx |
| Address: |
The number
of the port - starting from 1.
|
| I/O Port: |
not
used
|
| Interrupt: |
not
used
|
| Special Opt: |
not
used
|
| Ports
form
|
|
| Port name: |
User
supplied unique name for the port.
|
| Port number |
not
used
|
| Board name: |
Use
the Board name from the Boards
form. |
| Baud rate: |
up to
57600 may be used
|
| Data bits: |
7 or 8 |
| Stop bits: |
1 or 2 |
| Parity: |
0, 1 or 2
(for none, odd and even parity) |
| Special Opt: |
-h |
Use DTR
(data-terminal-ready) and RTS (request-to-send) signal for
reception flow control, monitor CTS (clear-to-send) and DSR
(data-set-ready) signal for output flow control. |
|
|
-r |
Raise DTR only
when transmitting. |
|
|
-t |
Raise RTS only
when transmitting. |
|
|
-i |
String Dial
modem string. This string is sent whenever the port is initialised.
Special characters are |
|
|
|
'~' |
delay for 500
milliseconds |
|
|
|
'~{60}' |
delay for 30 (500*60)
seconds. |
|
|
|
'\M' |
send carriage return |
Citect.ini options:
[COMX]
PollMode = 0
Use the 20 milliseconds timer to generate psuedo receive and
transmit interrupts. If PollMode is set to 1, then
[protocol]PollTime must be non zero.
TimerResolution = 20 milliseconds
Set the timer resolution to 20 milliseconds. Settting this value to
a lower value will increase CPU usage. The 55 milliseconds timer
will be used if TimerResolution and PollMode are both 0.
TxReset = 1
Reset COM port before each transmission of a frame of characters,
if -r or -t options is used. This is done to fix a bug in the
Windows driver.
Files:
COMX.DLL COMX Driver for windows
Limitations:
- Transmit buffer size 600 bytes
- Receive buffer size 1600 bytes
- Maximum number of ports 9
Initialisation errors (in Hexadecimal):
ffff Invalid or unsupported port number or
baudrate
fff6 Hardware not present
fff4 Unsupported baudrate
|
