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C300 Transmission protocol for C300 firmware 5.x.x
C300B transmission protocol 2017-06-12.doc
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Function
Read measure inputs settings and results
Command
RDMETIN_<INPUT>,<REGISTER>[CR][LF]
Answer
<VALUE>[CR][LF]
Description
Read settings and results of measure inputs.
To read exact values of input ranges it is necessary to use RDMETRANGES_ command.
Answer
parameter(s)
Default input and ranges:
<INPUT> = 0
14VDC input,
<INPUT> = 1
24mADC input,
<INPUT> = 2
10VAC input,
<INPUT> = 3
200mAAC input,
<INPUT> = 4
6AAC input,
<INPUT> = 5
16mAAC input,
<INPUT> = 6
VREF input (only for internal measurements),
<INPUT> = 7
GND input (only for internal measurements)
<REGISTER> = 0
MET_IN_MODE (return mode of ADC input):
<VALUE> = 0
ADC OFF,
<VALUE> = 1
ADC ON with auto range,
<VALUE> = 0
ADC ON with manual range,
<REGISTER> = 1
MET_IN_RANGE (return measuring range):
<VALUE> = 0
<INPUT> / 1 (e.g. 14VDC for 14VDC input),
<VALUE> = 1
<INPUT> / 2 (e.g. 7VDC for 14VDC input),
<VALUE> = 2
<INPUT> / 4 (e.g. 3.5VDC for 14VDC input),
<VALUE> = 3
<INPUT> / 8 (e.g. 1.75VDC for 14VDC input),
<VALUE> = 4
<INPUT> / 16 (e.g. 0.875VDC for 14VDC input),
<VALUE> = 5
<INPUT> / 32 (e.g. 0.4375VDC for 14VDC input),
<VALUE> = 6
<INPUT> / 64 (e.g. 0.21875VDC for 14VDC input),
<VALUE> = 7
<INPUT> / 128 (e.g. 0.10938VDC for 14VDC input),
<REGISTER> = 2
not used,
<REGISTER> = 3
MET_IN_AVERAGE (return number of signal periods of C300 current
output from which is made average):
<VALUE>
natural number in range from 1 to 2^16,
<REGISTER> = 4
MET_IN_PROGRESS (return averaging progress in number of signal
periods),
<VALUE>
natural number in range from 1 to MET_IN_AVERAGE,
<REGISTER> = 5
MET_IN_RMS (return RMS or DC value of measuring signal),
<VALUE>
real number,
<REGISTER> = 6
MET_IN_PHASE (return phase shift between calibrator current I1
output and measured signal),
<VALUE>
real number in range from 0.000 to 360.000,
Example(s)
RDMETIN_0,5[CR][LF]
(r
ead RMS value from input 0)
Example answer
-12.2450[CR][LF]
(DC value of measured signal)