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CS526 ISFET pH Probe

7.2.3.2 SerialOut() Instruction

The SerialOut() instruction has the following syntax:

SerialOut(ComPort,OutString,WaitString,NumberTries,TimeOut)

ComPort — the datalogger COM port in which the probe is connected.

OutString — use "1M1!"+CHR(13) for the OutString when the default probe

address of 1 is used.

WaitString — enter the null (“”) WaitString to tell the datalogger to wait for

the echo of each character in the OutString

NumberTries — enter 0

TimeOut — specifies the time, in 0.01 seconds, that the datalogger should

wait for the WaitString or echo of each character in the OutString (0 is

used in the example program).

7.2.3.3 SerialIn() Instruction

The SerialIn() instruction has the following syntax:

SerialIn(Dest,ComPort,TimeOut,TerminationChar,MaxNumChars)

Dest — specifies the variable in which the incoming data will be stored.

Please note that in the beginning of the CRBasic program, this variable

needs to be declared as ASCII string format (see example program in

Appendix B, Example Program)

ComPort — the datalogger COM port in which the probe is connected.

TimeOut — 20 should be adequate, which gives a 200 ms maximum delay

time. The TimeOut parameter is used to specify the amount of time, in

0.01 seconds, that the datalogger should wait before proceeding to the

next instruction.

TerminationChar — enter 0

MaxNumChars — 20 should be adequate (specify the maximum number of

characters to expect per input)

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Campbell CS526 Spécifications Page 18