Measurement Computing CB-NAP-7000P - Manual (Page 21)

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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