4.3
FETCh Subsystem
4-4
4.3.
FETCh Subsystem
4.3.1. QryFetcFreq
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Function name long QryFetcFreq
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Usage
Acquires the frequency from point data.
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Argument
[IN] long lngPID
// Packet ID (specifies the value acquired
// by BisOpenPacket)
long lngCh
// Specify CH (1 to 4)
long lntPntN
// Specifies the point position used to convert
// to the frequency data.
[OUT] double * dblFreq // Returns the acquired frequency (Hz).
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Return value
0: Normal
1: The IngCh or IngPntN argument is incorrectly specified.
Other: Refer to Section
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Description
The frequency corresponding to the position specified using the argument lng-
PntN is determined. Then, the value is stored in the argument dblFreq.
4.3.2. QryFetcPoin
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Function name long QryFetcPoin
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Usage
Acquires the point from frequency data.
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Argument
[IN] long lngPID
// Packet ID (specifies the value acquired
// by BisOpenPacket)
long lngCh
// Specify CH (1 to 4)
double dblFreq
// Specifies the frequency position used to convert
// to the point data.
[OUT] long * lngPntN
// Returns the acquired point data.
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Return value
0: Normal
1: The IngCh argument is incorrectly specified.
Other: Refer to Section
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Description
The point corresponding to the frequency specified using the argument dblFreq
is acquired. Then, the value is stored in the argument lngPntN.