Yokogawa PC-Based MX100 - Manual (Page 1236)

App-15
IM MX190-01E
Appendix
App
Channel Information Data
Static information such as the channel type, channel number, and decimal point
position for each channel.
See the DarwinChInfo structure.
The data can be retrieved using the output of the channel information data by the
talker.
Unit Name
An arbitrary string of up to 6 bytes.
Channel Status
Uses a value that is common with the data status.
See the data status value.
Device Descriptor
Value used to identify the measuring instrument.
The device descriptor is required when executing the functions.
For the API, the entity is a reference to the CDAQDARWIN object.
DAQDARWIN type is used for storage and designation.
For the extension API, the entity is a reference to the CDAQDA100 object.
CDAQDA100 type is used for storage and designation.
Measured Data
Data value information for the measurement points of each channel.
See the DarwinDataInfo structure.
The measured data can be retrieved using the output of the measured data by the
talker.
The alarm presence/absence is expressed by the alarm type.
Data Status
Uses a value that is common with the channel status. See the data status value.
Measured Value
The measured value is expressed by the data value and the decimal point position.
The engineering unit is obtained from the data value and the decimal point position.
Data Value
A value that expresses the mantissa of the measured value as an integer value.
Decimal Point Position
A value that expresses the exponent of the measured value.
It is an integer value between 0 and 4.
Appendix 2 DARWIN Terminology