Campbell Scientific CR1000KD CR1000 Measurement and Control System - Page 211

Section 7. Installation Scan(5,Sec, 3, 0) 'Serial Out Code 'Transmits string "*27.435,56.789#" out COM1 SerialOpen(Com1,9600,0,0,10000) 'Open a serial port 'Build the output string SerialOutString = "*" & TempOut & "," & RhOut & "#" 'Output string via the serial port SerialOut(Com1,SerialOutString,"",0,100) 'Serial In Code 'Receives string "27.435,56.789" via COM2 'Uses * and # character as filters SerialOpen(Com2,9600,0,0,10000) 'Open a serial port 'Receive serial data as a string '42 is ASCII code for "*", 35 is code for "#" SerialInRecord(Com2,SerialInString,42,0,35,"",01) 'Parse the serial string SplitStr(InStringSplit(),SerialInString,"",2,0) NextScan EndProg 7.8.8.6 Testing Applications A common problem when developing a serial I/O application is the lack of an immediately available serial device with which to develop and test programs. Using HyperTerminal, a developer can simulate the output of a serial device or capture serial input. Note HyperTerminal is provided as a utility with Windows XP and earlier versions of Windows. HyperTerminal is not provided with later versions of Windows. HyperTerminal automatically converts binary data to ASCII on the screen. Binary data can be captured, saved to a file, and then viewed with a hexadecimal editor. Other terminal emulators are available from third-party vendors that facilitate capture of binary or hexadecimal data. 7.8.8.6.1 Configure HyperTerminal Create a HyperTerminal instance file by clicking Start | All Programs | Accessories | Communications | HyperTerminal. The windows in the figures HyperTerminal Connection Description (p. 212) through HyperTerminal ASCII Setup (p. 213) are presented. Enter an instance name and click OK. 211