Contec CONPROSYS Linux SDK, User Manual

Page: 55 / 61

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Appendix
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CONPROSYS Linux SDK User’s Manual (Self -Build Edition)
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Counter command port (Page 2h / Address 18h) W
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0 0 0 0 0 0 0 0 0 Cmd06 - 00
This port is an operation command port to execute the following command codes.
Command code list:
08h: Ch0 counter mode (Write)
09h: Ch1 counter mode (Write)
18h: Ch0 comparison register 0 (Write)
19h: Ch1 comparison register 0 (Write)
20h: Ch0 comparison register 1 (Write)
21h: Ch1 comparison register 1 (Write)
38h: Count match status check / clear (Read/Write)
3Ah: Carry status check / clear (Read/Write)
3Dh: Zero clear (Write)
When executing the command to write, the data are set into data address port (Page 2h / Address
1Ch
– 1Fh). When executing the command to read, the data are read from data address port (Page
2h / Address 1Ch – 1Fh).
Control data address port after controlling the command port.
Refer to
“ Counter I/O unit port map (Page 2h (page 52) ” to “ Internal power ON/OFF setting
port (Page 0h / Address 1Ch – 1Dh) R/W (page 53) ” regarding the format of the data address
port for each command code.
Ch0 / Ch1 counter mode (counter command code: 08h / 09h) W
Addr D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
1Ch 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1Eh 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
This sets operation modes of the counter. Each mode can be set per input channel.
Ch0 / Ch1 comparison register 0 (counter command code: 18h / 19h) W
Addr D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
1Ch Data00 – 15
1Eh 0 0 0 0 0 0 0 0 Data16 - 25
This sets data into Ch0 – Ch1 count value comparison register 0.