57 WISE-4000 User Manual
Chapter 4 System Configuration
Low to High Latch
When you choose Low to High Latch mode, once the digital input channel detects
logic level changes from low to high, the logic status will be kept as logic high. The
logic status will remain the logic high, until you clear the latch manually. The logic sta-
tus will return to logic low. The logic status can be seen by the Latch status LED dis-
play in the DI Status page. Clear the latch by clicking the Clear button. Enable/
disable the Invert Status function in the configuration page.
High to Low Latch
When you choose High to Low Latch mode, once the digital input channel detects
logic level changes from high to low, the logic status will be kept as high. The logic
status will remain high, until you clear latch manually. Then the logic status will return
to low. The logic status can be seen by the Latch status LED display in the DI Status
page. Clear the latch by clicking the Clear button. Enable/disable the Invert Status
function in the configuration page.
Frequency
For pure DI channels, not including the DI function of the WISE-4012, WISE modules
support frequency mode. WISE module will calculate the frequency value of the digi-
tal input signal from the selected channel. The frequency value will be displayed in
the Frequency value text box in the DI Status page.