Latch (EL5151 only)

Activating the latch C input (“C”) and latching the counter value

The counter value is saved in “Latch value” (index 0x6000:12) upon the first latch pulse (positive edge on input “C”) after setting the bit (TRUE) in “Enable latch C” (index 0x7000:01) (takes priority over “Enable latch extern on positive/negative edge” index 0x7000:02 / 0x7000:04). If the bit is set, the subsequent pulses on the other inputs have no effect on the latch value in “Latch value” (index 0x6000:12).
After re-activation of “Enable latch C” (index 0x7000:01), the next counter value at the latch input can be written only if the value of the “Latch C valid” bit (index 0x6000:01 FALSE) has been reset.

The counter value at the latch input “Latch value” (index 0x6000:12) will be saved upon the first external latch pulse with a positive edge if the bit (TRUE) is set in “Enable extern latch on positive edge” (index 0x7000: 02). The subsequent pulses have no influence on the latch value in “Latch value” (index 0x6000:12).
The counter value at the latch input “Latch value” (index 0x6000:12) will be saved upon the first external latch pulse with a negative edge if the bit (TRUE) is set in “Enable extern latch on negative edge” (index 0x7000: 04). The subsequent pulses have no influence on the latch value in “Latch value” (index 0x6000:12).
After re-activation, a new counter value on the latch input can be written only if the value of the “Latch extern valid” bit (index 0x6000:02) has been reset.