Lumel N32O, Руководство пользователя, Страница: 47 / 69

N32O User's manual 47
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17 (11h) – slave device identification.
5.5.4 Map of the registers
The register map of the N32O meter is divided into separate groups of 16-bit or 32-bit
registers. Data stored in 32-bit registers are additionally available in the format of 16-bit
registers, with the value of one 32-bit register is stored in two 16-bit registers.
The 32-bit registers store data in the float format compliant with IEEE-754. Bytes
sequence: B3 B2 B1 B0 – the oldest byte is transmitted as the first. The 16-bit registers
representing 32-bit values in two successive registers have been doubled in another
address space with a byte sequence: B1 B0 B3 B2.
The table below shows the register map of the N320 meter. The addresses in the table are
the physical addresses. The register number should be increased by 1 when using the
programs where the addresses are provided in a logical format.
Address range Value type Description
4000 – 4079 16 bits Readout and write registers - configuration registers
4200 – 4257 16 bits Readout only registers with system parameter values
7500 – 7521 32 bits
(float)
Readout only registers with measuring and calculated values.
7600 – 7744 32 bits
(float)
Readout and write registers - registers with configuration data.
7000 – 7043 16 bits Readout only registers. Registers store the same data as the registers
7500-7519, where one value is stored in two successive registers.
7200 – 7489 16 bits Readout and write registers. Registers store the same data as the registers
7600-7744, where one value is stored in two successive registers.
5.5.4.1 Registers 4000 – 4079
16-bit readout and write configuration registers.
Address Permissible values Default Description
Measurement, display and protection of configuration
4000 0...8 1
Type of measuring signal at the main input
Value Type of measuring signal
0 Bidirectional counter of fast changing signals.
1 Bidirectional counter of slow changing signals.
2 Period measurement.
3 Frequency measurement.
4 Rotation speed measurement.
5 Quadrature encoder support.
6 Unidirectional counter with speed measurement (frequency)
7 Working time counter.
8 Timer
9 Current time.