Min Ha Jin
New member
- Joined
- Jul 10, 2013
- Messages
- 1
- Programming Experience
- 3-5
I have been testing the SerialPort communications.
The packet format
STX + M + ENQ + ETX + BCC
My coding
SerialPort1.Open()
Dim b(4) As Byte
b(0) = &H2 'STX
b(1) = CByte(Asc("M"))
b(2) = &H5 'ENQ
b(3) = &H3 'ETX
Dim bcc As Byte = 0 'checksum????
For x As Integer = 0 To 3
bcc ^= b(x)
Next
b(4) = bcc
SerialPort1.Write(b, 0, b.Length)
I do not know what the problem is.
Equipment does not have a reaction.
To ask for help.
The packet format
STX + M + ENQ + ETX + BCC
My coding
SerialPort1.Open()
Dim b(4) As Byte
b(0) = &H2 'STX
b(1) = CByte(Asc("M"))
b(2) = &H5 'ENQ
b(3) = &H3 'ETX
Dim bcc As Byte = 0 'checksum????
For x As Integer = 0 To 3
bcc ^= b(x)
Next
b(4) = bcc
SerialPort1.Write(b, 0, b.Length)
I do not know what the problem is.
Equipment does not have a reaction.
To ask for help.
