M10
Instruction Manual
30
4.6.2 Connection options I/O
4.6.2.1
Pulse output
M10 meter is equipped with 2 passive outputs (1 programmable) with following characteristics:
Galvanically insulated SSR Type (dry contact)
Max load +/- 35VDC, 100 mA, protected against short circuits
Minimum pulse duration 5ms or max pulse frequency 100Hz
Pulse output 1:
Positive volume: generate a pulse every time the flowrate in positive direction generate a volume that
exceeds the impulse volume
Pulse output 2:
Programmable by “EuromagLink” software or “Mag-Net” App
Negative volume
Positive volume
Error detection: 3 pulses/sec are generated if an error is detected
Pulse output is characterized by two parameters that must be set by the user according to the flow
conditions in which the meter is operating
Pulse Volume (Vp)
Pulse Duration (Tp)
For battery powered meters, choose a pulse volume large enough so that the time interval between two
consecutive pulses is greater than 1 second in order to preserve the battery life
Avoid pulse saturation, as it may lead to pulse accumulation which should not be provided in real time
considering the actual flow rate.
Calculation of the Pulse Volume (Vp) and Pulse Duration (Tp) as a function of the flow rate:
Mains powred: V
p
≥ 2 Q
MAX
∙ T
p
Battery powred: V
p
≥ 20 Q
MAX
∙ T
p
Where Tp must be in the range from 5ms to 500ms.
4.6.2.2 RS485 - 2 wire interface
Connection available between pink (D) and grey (E) terminals which are available through the cable or
connector pins, not optoisolated.
Communication protocol: ModBUS RTU Slave
Default configuration: Baudrate: 9600 (Max 56700) - 8N1
Current Modbus configuration can be show following instruction on paragraph: “5.5 FUNCTIONS” Functions:
from 48 to 54
or using Mag-Net app or EuromagLink software
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