Emerson MCi210, Руководство пользователя

Страница: 70 / 78

70
MCi210 User Guide
Issue Number: 2
8 Timer
The MCi210 module offers timer functionality. The Timer Unit can be configured to be clocked from
one of two digital inputs or the module's internal clock. When the internal clock is used, the
frequency can be selected from four possible values; 50 MHz, 12.5 MHz, 3.125 MHz and 781.25
kHz.
Two modes of operation are supported; Free running mode or Capture mode. Capture mode allows
the value of the Timer Unit counter to be captured using the module's digital input 3.
Event task triggering is also supported. One of four Event tasks may be configured to run on a
Timer Event occurring. The Event will be either the capture of the counter value counter value
rollover.
See section 5.8
Menu 3 - Timer on page 32 for further information.