Circutor ReadWatt, Инструкция по эксплуатации

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4.- OPERATION
ReadWatt
reads the light impulses from the meter, whose value is shown in real time on a
MODBUS
parameter, which can be queried by another application.
The device reads kWh consumed or generated and totalizes them in the MODBUS meter, which works
incrementally, being able to generate, for example, a load curve in external software.
4�1�- IMPULSE LED
The device has an impulse LED with the same rate as the LED on which impulses are captured. This
safeguards the functionality of the meter's LED.
This LED has the same metrological validity as the meter's LED.
LED
Figure 8:Readwatt LED indicators
During start-up, the LED indicates the speed of the communication bus, by emitting 1, 2 or 3 light im-
pulses, see
Table 3
.
Table 5: Communication bus speed�
No� of pulses Speed
1 9600 bauds
2 19200 bauds
3 38400 bauds
4�2�- IMPULSE OUTPUT
The device has a transistor output (terminal no.
7
in
Table 3
) to activate PLC or similar inputs.
Through MODBUS it is possible to configure the impulse width and ratio between output impulses and
impulses read from the energy meter verification LED.
13
Instruction Manual
ReadWatt