User Manual

2-24 ADS TRITON+ Manual
thro ugh the outputs at the s ame interva l used when taking sensor
readings.
The analog inputs are designed to stor e specific data received from
third-part y instruments, such a s sensors, eve ry 15 seconds.
Digit a l Inputs and O ut put s
The monitor can support up to two digital inputs and two digital
outputs. T he d igital inputs re c e ive p ulses co rresponding to switches
that indicate the presence or absence of a p ar ticular condition, such
as an a l arm occurring thr ough a thir d-party system. The TRITON+
records the state of these inputs at an interval equivalent to the
monitor’s sample rate.
The digital o utputs serve as relays to notify other third-party
systems concerning certain flow conditions detected by the
TRITON+. Conditions typically involve flows cro ssi ng e st ablished
thresholds that trigger events . The TRITON+ refreshes the state of
these outputs every 15 seconds.
Modbus
Modbus is a protocol that enables communication to occur between
multiple devices connected to the same network. It often is used to
connect a supervisory computer with a remote terminal unit (RTU)
in supervisory control and data acquisition (SCADA) systems.
ADS uses Modbus to provide information directly to RTUs or
SCADA systems.
The ExPAC represents the inte rface through which Modbus
communications occur.