Appendix A
System Example
man_105_2.9.doc
Page
71
Tank Station Configuration
The 105U-2 module has the following configuration :-
Note the following points in the
configuration :
•
#1 is a repeater for communications
between #2 and #96
•
The pulse rate scaling for PIN1 has
been set to 5 Hz to match the
maximum flow rate of the flow
meter. Note that PIN1 has not been
configured for "divide by 10" (for
1000 Hz pulse signals).
•
AIN1 (the level transducer) is
mapped to AO1 at the 105U-3. The
analogue debounce has been set to 2
sec. This is because of concern of
wave action on the surface of the tank
causing un-necessary change
transmissions. This debounce time
will also operate on the Pulse Rate
value, but as the flow rate changes
slowly, this will not affect the
performance of this signal.
•
SETPOINT1 (the set-point status for
AI1) is mapped to DO2 of #1 (pump
station). The set-point values for this
setpoint have been set to 40% and
75%. When the tank level drops to