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Data Output Commands |
Use a PLC or Block Tag to execute data output commands and configure their parameters according to the next table.
Parameter for data output commands
N1 or B1 |
Code of a command. Please check the next table for more information |
N2 or B2 |
Not used, leave it in 0(zero) |
N3 or B3 |
Not used, leave it in 0(zero) |
N4 or B4 |
Not used, leave it in 0(zero) |
The next table contains a list of data output commands supported by this Driver.
Data output commands
N1 or B1 |
Command |
Type of Tag |
Description |
Operation |
|---|---|---|---|---|
300 |
Configuration of harmonics |
PLC |
Reads the configuration of harmonics. Returns a 16-bit value with the structure described on table Structure of bits of harmonics configurations |
Read-only |
301 |
Harmonics |
Block |
Reads measured or calculated harmonics values. Data type for all Elements is Float, returning the Elements described on table Structure of Elements of harmonics values. Please check the next note for more information |
Read-only |
302 |
Configuration of normal measurements |
Block |
Reads the configuration of normal measurements. Returned data have an ON or OFF type, indicating whether parameters are enabled or not |
Read-only |
303 |
Normal measurements |
Block |
Reads normal measurement values, measured or calculated. The position of the parameters is marked by an x on Appendix 1. NOTE: Time and Math variables, when inactive, always receive the value -1 (minus one) |
Read-only |
Structure of bits of harmonics configurations
Bit |
Description |
|---|---|
0 |
SYNC (On or Off) |
1 |
VTHD (On or Off) |
2 |
V (On or Off) |
3 |
VCON (On or Off) |
4 |
ATHD (On or Off) |
5 |
A (On or Off) |
6 |
ACON (On or Off) |
7 |
PF (On or Off) |
8 |
W (On or Off) |
9 |
WCON (On or Off) |
10 |
VDEG (On or Off) |
11 |
ADEG (On or Off) |
12 |
None |
13 |
None |
14 |
None |
15 |
None |
Structure of Elements of harmonics values
Element |
Description |
|---|---|
1 |
PLL source frequency (Hz) |
2 |
Harmonic distortion factor of voltage (%) |
3 |
RMS value of 1st order out of 50th (V) |
4 |
Fundamental measured value of 1st order (V) |
5 a 53 |
Harmonic measured value from 2nd order to 50th order (V) |
54 a 102 |
Relative harmonic content from 2nd order to 50th order (%) |
If all presets are enabled for reading in a Harmonics command, the size of a Block Tag is 404 Elements. While supported by the specification of this command in Yokogawa protocol, that is not advisable. Prefer a partial reading of 102 Elements. To execute a reading command of harmonics values, enable the harmonics measurement mode by executing a Harmonics Command (the N1 parameter equal to 50). |