The data format of the counter read/write register then becomes:
BASE+24/26/28(Dec) Status read-back mode
Bit
Value
OUT
NC
104
D7
D6 D5
OUT
NC RW1
Current state of counter output
Null count is 1 when the last count written to the counter
register has been loaded into the counting element
D4
D3 D2 D1 D0
RW0
M2 M1 M0 BCD