Manual

WI-I/O 9-x_WI-I/O-EX-1-S-x 2.16 Page 51
Pulse Input Count Configuration
PI1 of the -2 and -4 modules normally count up to 100Hz (as for the other PI’s), however can be
configured to count up to 1000Hz. This configuration actually divides the input count by 10 - each
count in the PI1
register is then
equivalent to 10
input pulses. If
PI1 is mapped to a
PO, then the
maximum output
pulse rate is
100Hz, however
each output pulse
is equivalent to 10
input pulses.
To configure the “divide by 10” feature, select “Pulse Inputs” on the left-hand menu and select the
“Count” page - double-click “Pulse Input 1 Count” and enable “divide by 10” counting.
Pulse Input Rate Scale Configuration
When a pulse rate is mapped to an analog output, the rate must be scaled to the 4-20mA output. The
pulse rate scale is the rate (in Hz) corresponding 20 mA.
To configure the pulse rate scale, select “Pulse Inputs” on the left-hand menu and select the “Rate”
page - double-click the pulse input rate and enter the scale value.