Timer/Counter Unit - Control Techniques UD70 User Manual

Cam Table
When using the cam table, S-ramps cannot be used for position control, so
_ Q32%.8 is always reset to 0. When starting the cam table using the
auxiliary marker pulse,
the marker pulse is detected. If the cam table has not been initialised
correctly,
Reset
When a profile generator reset is requested using
reset. _ Q32%.17 is reset to 0 when all registers have been cleared.
8.12

Timer/Counter unit

C
4MHz
500kHz
DIGIN 0
1
DIGIN 1
Logic diagram for the timer/counter
A hardware timer/counter built into the
• Count rate selectable between 500kHz and 4MHz.
• The count direction can be selected.
• The counter can be gated by an external signal source.
• The
over/underflows, or by applying logic 1 to input 0 DIGIN (digital
• The value of the timer/counter unit can be frozen by applying logic 0
to input 0 DIGIN.
• The timer/counter unit can be clocked by a 1-to-0 transition at
input 0 DIGIN. Maximum input frequency is 1 MHz.
8-32 Features
_ Q32%.4 is set to 1 and
_ Q32%.4 cannot be set.
EN
16-bit up/down counter
&
&
u/d
Control
D
M[0.2]
task can be initiated when the timer/counter
EVENT
_ Q32%.12 is reset to 0 when
_ Q32%.17, all registers are
Timer
TE
Event
TI
Reload
has the following features:
UD70
Issue code: 70nu2
).
TTL
UD70