Neomatica, LLC. Terminal ADM700 3G GLONASS/GPS. Ed. 7.2, dd. 24.11.2018
19
When the discrete state is changed, an extraordinary packet is sent, and the discrete state is
transmitted in the OUTS data block.
Activate the required data blocks transmission with the «
PROTOCOL»
command.
7.2 Pulse inputs
Inputs IN6(DIN0), IN7(DIN1) are used for connecting frequency sensors, flowmeters,
including differential ones to the tracker These inputs might be set as discrete inputs with an inner
pull-up to the plus.
Discrete (pulse) inputs operation mode is set by the
«
IMPULSE X, Y»
command
X
– DIN0 input mode, Y – DIN1 input mode
Examples:
IMPULSE 0,0
– pulse inputs in the “Frequency meter” mode
IMPULSE 1,1
– pulse inputs in the “Flowmeter” mode
IMPULSE 1,2
– pulse inputs in the “Differential flowmeter” mode
IMPULSE 3,3
– pulse inputs in the “Discrete input” mode
«Frequency meter», «Flowmeter» and «Discrete input» modes might be chosen in any
combination. The «Differential flowmeter» mode works with both inputs.
To transmit data from discrete (pulse) inputs to the server it is necessary to activate the
«IN_D» data block with the «
PROTOCOL
» command. Depending on the operation mode selected,
the response to the «
INPUT
» command will contain frequency, flowmeter accumulated values or
current state of the discrete input.
7.2.1 «Frequency meter» mode
The «Frequency meter» mode allows measuring the current signal frequency. It is used when
connecting frequency output sensors. Connection layout for a fuel level output sensor is provided
in the Figure 5.