YOKOGAWA WT210 User Manual

14-35
IM 760401-01E
Communication Commands 2 (System of Commands Complying to the IEEE 488.2-1992 Standard)
14
Data Format/Output Format of Normal Measurement and Harmonic Measurement Data
<BINARY>
The data format and output format of normal measurement and harmonic measurement
data in binary format that are output by the MEASure[:NORMal]:BINary? or
MEASure:HARMonics:BINary? command are as follows:
Data Format
Measured data consists of a 2-byte header and 4-byte data (total of 6 bytes).
Header (2 bytes) Data (4 bytes)
Header structure
The header consists of a 1-byte status and 1-byte ASCII conversion information.
Status (1 byte) ASCII conversion information (1 byte)
• Status byte
b7 b6 b5 b4 b3 b2 b1 b0
• b7 to b4: Lead/Lag phase information
(This information is meaningful only when the data is a phase angle (DEGR).
For all other cases, the value is always 0000.)
0000: Lag 0001: Lead 0010: Cannot be detected
• b3 to b0: Data status
0000: Normal 0001: Overrange (--oL-) 0010: Voltage peak over
0011: Current peak over 0100: Power factor error (PFErr)0101: Phase angle error (dEGEr)
0110: Frequency error (ErrLo)0111: Frequency error (ErrHi) 1000: Computation overflow (--oF-)
1001: PLL error (FreqEr) 1010: No data (-----)
• ASCII conversion information
b7 b6 b5 b4 b3 b2 b1 b0
• b7 to b4: Prefix unit
0000: None (E+0) 0001: m (E–3) 0010: k (E+3)
0011: M (E+6)
• b3 to b0: Decimal point position
0000: _ _ _ _ _ . 0001: _ _ _ _ . _ 0010: _ _ _ . _ _
0011: _ _ . _ _ _ 0100: _ . _ _ _ _ 0101: . _ _ _ _ _
Data structure
Data is in 4-byte IEEE single-precision floating point format.
SEEEEEEEEMMMMMMMMMMMMMMMMMMMMMMM
The byte order is MSB first.
Physical value = (–1)
S
×(2(E
–127
))×(1+M/(2
23
))
S: Sign bit, 0 or 1
E: Exponent in the range of 0 to 254
M: Mantissa as a 23-bit binary value
• For elapsed integration time
Outputs the time in units of seconds. For example, 0x45610000(=3600) if the time is 1
hour (1:00:00).
• For overrange and computation overflow
0x7E94F56A (=9.9E+37)
• For no data
0x7E951BEE (=9.91E+37)
Output format
The output format (output order of measured data) is the same as the ASCII format.
14.3 Commands

YOKOGAWA WT210 Specifications

General

Brand	YOKOGAWA
Model	WT210
Category	Measuring Instruments
Language	English