38
Resettable energy counter
These registers hold three values for the energy counter, amount of energy used, format of the energy value and unit of
the energy value.
Example: If energy = 1200, format = 52, unit = 1, then actual energy is 12.00 kWh
Table 32. Resettable energy counter
Holding register
address
Input register
address
Purpose
Description
40301
301
Energy
Amount of energy taken from a supply network.
40302
302
Format
The last number of the Format field indicates
the decimal point place in the Energy field.
Example:
40 = 4 number of digits, 0 fractional digits
41 = 4 number of digits, 1 fractional digit
42 = 4 number of digits, 2 fractional digits
40303
303
Unit
1 = kWh
2 = MWh
3 = GWh
4 = TWh
Unit of the value.
Holding register address
Input register address
Purpose
40401
401
Upper byte is a fault code, lower byte is a sub code
40402
402
40403
403
...
...
40429
429
Holding register address
Input register address
Purpose
40511
Fault code 1
16-bit fault code in index 1
40512
Sub code 1
16-bit sub code for the fault in index 1
40513
Fault code 2
16-bit fault code in index 2
40514
Sub code 2
16-bit sub code for the fault in index 2
...
...
40567
Fault code 29
40567
Sub code 29
6.3.13 Fault History
6.3.14 Fault History with 16-bit Error Codes
The fault history can be viewed by reading from address 40401 onward. The faults are listed in chronological order so
that the latest fault is mentioned first and the oldest last. The fault history can contain 29 faults at the same time. The
fault history contents are represented as follows.
NOTE!
Reading the fault history items is slow. Reading all 30 items at once might take up to 600 milliseconds.
The fault history can be viewed by reading from address 40511 onward. The faults are listed in a chronological order so
that the latest fault is mentioned first and the oldest last. These addresses contain the fault code and the subcode for
the fault. Reading can be started from any address.
Table 33. Fault history
Table 34. Fault history with 16-bit error codes
Summary of Contents for Praxi 100
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