B&R BRCOMP1-0 Anwenderhandbuch Seite 191

6) Read Counter x
The actual values of the counters are stored at addresses $2100 - $210F. The pointers to the operating
system routines sit at the following addresses:
NOTE: The corresponding bits (0 - 3) in the control register must be set.
In order to read the values, follow the procedure shown below:
LDD # $xxxx
XGDX
JSR X 000
7) Copy Actual Value to Registers
The actual values of the counters are stored at addresses $2100 - $210F. In order to copy the values to
registers, the procedure shown in the example below must be followed.
Example The actual value of counter 0 will be copied to registers R 3000 - R 3003.
LDD #$2100
XGDX
LDD X 000
STD R 3000
LDD X 002
STD R 3002
Address Actual value
$C12F Read counter 0
$C132 Read counters 1 and 2
$C135 Read 2 channel counter (Encoder)
Address of pointer to OS routine
Start address Actual value Counter 0
Higher Word Actual value
Lower Word Actual value
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