Measurement-computing CB-NAP-7000P Manual do Utilizador descarregar pdf (Página 21)

5.9 I7000_AnalogOutReadBack

z Description:

Read back the current D/A output value of CB-7021. There are two types of analog output read back as following:

1. command read back by $AA6 command

2. analog output of current path read back by $AA8 command

z Syntax:

I7000_AnalogOutReadBack(WORD w7000[], float f7000[], char szSendTo7000[], char szReceiveFrom7000[])

z Input Parameter:

w7000: WORD Input/Output argument table

f7000: float Input/Output argument table

szSendTo7000: command string send to CB-7000

szReceiveFrom7000: result string read from CB-7000

z Return Value:

NoError: OK

others: Error code, refer to I7000.H

z W7000: WORD Input/Output Table

w7000[0]: RS-232 port number, 1/2/3/4

w7000[1]: module address, from 0x00 to 0xFF

w7000[2]: module ID, 0x7021

w7000[3]: 0=checksum disable, 1=checksum enable

w7000[4]: TimeOut constant, normal=100

w7000[5]: 0: command read back ($AA6)

1: analog output of current path read back ($AA8)

w7000[6]: 0 :no save to szSendTo7000&szReceiveFrom7000

1 :szSendTo7000=command string send to CB-7000

:szReceiveFrom 7000=result string receive from CB-7000

z F7000: Float Input/Output Table

f7000[0] : analog output read back value

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Measurement-computing CB-NAP-7000P Manual do Utilizador Página 21