YOKOGAWA VZ20X, User Manual

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IM 77V01B01-01EN 5th Edition: 2023.03.07-00
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71 Acquire data
This command can acquire "4 data acquisition intervals' worth of data x data of 8
channels".
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Function
・
Acquisition of latest data acquisition value
・
Acquisition of data previous access value (the same data is acquired again when a
communication error occurs at acquisition of the latest value)
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Function selection
Function selection
code
Description
0001 Acquisition of latest data acquisition value
0002 Acquisition of data previous access value
The response is the same whichever function selection code is set.
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Data acquisition error status
Error Code Description
00 No error
01 Buffer is not full.
02 Data omission occurred.
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CHn STS (n=1 to 8)
This is the measured value status of each input channel. This displays the error
information of measured values as a single byte. The 0 to 5th bits are handled as
numerical values. The 6th and 7th bits express errors in bits. Error status is expressed in
the numerical values of the 0 to 5th bits as the logical sum of the 6th and 7th bits.
When +overscale, measured value error and RJC error occur simultaneously, the values
are as follows:
+overscale: 1
Adjustment value error: 64
RJC error: 128
Error status = 1 (+overscale) + 64 (Adjustment value error) + 128 (RJC error) = 193