MicroLogic A/E/P/H Modbus Register Tables
General Description
The following chapters describe the Modbus registers of MicroLogic A/E/P/H trip units embedded in MasterPacT NT/NW, ComPacT NS and PowerPacT P- and R-frame circuit breakers. These registers provide information that can be read, such as electrical measures, protection configuration, and monitoring information. The command interface enables the user to modify these registers in a controlled way.
The MicroLogic A/E/P/H trip unit registers are grouped in tables of logically related information. The contents of the tables are ordered by increasing address.
The MicroLogic A/E/P/H trip unit commands are described separately.
MicroLogic A/E/P/H Table Format
Register tables have the following columns:
|
Address |
Register |
RW |
X |
Unit |
Type |
Range |
A/E/P/H |
Description |
|---|---|---|---|---|---|---|---|---|
-
Address: a 16-bit register address in hexadecimal. The address is the data used in the Modbus frame.
-
Register: a 16-bit register number in decimal (register = address + 1).
-
RW: register read-write status
-
R: the register can be read by using Modbus functions
-
W: the register can be written by using Modbus functions
-
RW: the register can be read and written by using Modbus functions
-
RC: the register can be read by using the command interface
-
WC: the register can be written by using the command interface
-
-
X: the scale factor. A scale of 10 means that the register contains the value multiplied by 10. So, the real value is the value in the register divided by 10.
Example:
Register 1054 contains the system frequency. The unit is Hz and the scale factor is 10.
If the register returns 503, this means that the system frequency is 503/10 = 50.3 Hz.
-
Unit: the unit the information is expressed in.
-
Type: the encoding data type (see data type description below).
-
Range: the permitted values for this variable, usually a subset of what the format allows.
-
A/E/P/H: the metering type of the MicroLogic trip unit.
-
type A (Ammeter): current measurements
-
type E (Energy): current, voltage, power, and energy measurements
-
type P (Power): current, voltage, power, energy measurements, and advanced protection
-
type H (Harmonics): current, voltage, power, energy, energy quality measurements, and advanced protection
-
-
Description: provides information about the register and restrictions that apply.
MicroLogic A/E/P/H Data Types
|
Data Types |
Description |
Range |
|---|---|---|
|
INT16U |
16-bit unsigned integer |
0 to 65535 |
|
INT16 |
16-bit signed integer |
-32768 to +32767 |
|
INT32U |
32-bit unsigned integer |
0 to 4 294 967 295 |
|
INT32 |
32-bit signed integer |
-2 147 483 648 to +2 147 483 647 |
|
INT64U |
64-bit unsigned integer |
0 to 18 446 744 073 709 600 000 |
|
INT64 |
64-bit signed integer |
-9 223 372 036 854 775 808 to +9 223 372 036 854 775 807 |
|
SFIXPT |
16-bit signed integer with a fixed point |
-32768 to +32767 |
|
FLOAT32 |
32-bit signed integer with a floating point |
2-126 (1.0) to 2127 (2 - 2-23) |
|
OCTET STRING |
Text string |
1 byte per character |
|
MOD10000 |
Modulo operation |
– |
|
DATE |
Date and time |
– |
|
XDATE |
Same as DATE with a fourth INT16U register for milliseconds information |
– |
|
DATETIME |
Date and time in the IEC 60870-5 format |
– |
|
ULP DATE |
Date and time in ULP DATE format |
– |