Instructions
for serial communication using I/O ActiveX Control
Open
the port:
Result
= IO1.Open("COM2:", "baud=9600 parity=N data=8 stop=1")
"COM2:"
is the name of the port.
"baud=9600"
specifies how fast the data is sent.*
"parity=N"
specifies an error detection protocol.*
"data=8"
specifies how many data bits are sent in a packet.*
"stop=1"
specifies how many bits terminate a packet.*
Set
type of handshaking:
Result
= IO1.SetHandshaking(HSMethod)
Where
0 = None, 1 = Xon/Xoff, 2 = Hardware*
Handshaking
is a method of "holding off" or "preventing" communication when a
device
is not ready to receive data.
Do
the I/O:
Result
= IO1.WriteString("Hello World" + Chr(13) + Chr(10)) 'Sends "Hello
World"
to a printer or other device.
String
= IO1.ReadString(30) 'Reads data from a port. Typically a request for
data
precedes this command.
Close
the port:
Result
= IO1.Close()
*NOTE:
These settings MUST match the settings of the device you are
communicating
with.
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