London Electronics EasyReader ER2C Instruction Manual page 10

Scaling for the 6 Counter modes...
On the previous page, you saw how to select from one of 7 different modes. The first 6 modes are
all counter functions, which all have the same method of scaling.
To select a mode, you pressed OK. If you selected one of the first 6 counter modes, your display
should now show:-
Pulses In
Display
Preset (pre-load)
P.Set lets you start the counter from
some value other than 0.
For example if you wanted to fit a new
counter into a system which has
already passed 1367 litres, you
would set P.Set to 1367 and the
counter would start counting from
this value.
Typical examples:
On a production line you get 1 pulse for
every item. You want to count number of
items.
P.in = 1
dISP = 1
P.Set = 0
In a paper mill, you want to measure
length. You have a wheel sensor which
gives 433 pulses per metre of material.
You want to count metres to 1 decimal
place (tenths of a metre)
P.in = 433
dISP = 1.0
P.Set = 0.0
IMPORTANT
The value you can set for
each of these 3 variables
To protect your settings, disconnect the
LOCKOUT link on the input connector.
7
You'll see one digit brighter than
the others - this means you can
change its value with the UP or
DOWN button.
Use DIGIT button to select other
digits.
Select decimal-point with the
DIGIT button if you want to change
the decimal-point position. Move
the decimal-point with UP/DOWN
buttons.
Press OK when you have set the
whole number, to move on to the
next variable
You have a rotary encoder which gives
5000 pulses per rotation (360 degrees).
You want to display degrees rotation
P.in = 5000
dISP = 360
P.Set = 0
A flow sensor gives 2345 pulses per litre
You want to count milli-litres (cc). You
want the display to start from 450 ml
P.in = 2345
disp = 1000
P.Set = 450