Functional Description
CPB902
C P B 9 0 2 U s e r M a n u a l
30
© 2 0 0 8 F a s t w e l v . 1 . 5 b E
Port
(hex)
Bit
Read
Write
Value
Comment
0
0
yes
yes
1
0
1
yes
yes
1
0
2
yes
yes
1
0
3
yes
yes
1
0
4
yes
yes
1
0
5
yes
yes
1
0
6
yes
yes
1
0
319
7
yes
yes
1
LCD: read/write data, write commands, read status
0
yes
no
Always 1
LCD read available
1
yes
no
0
–
2
yes
no
0
–
0
3
yes
yes
1
/lcd_cs2 line status
0
4
yes
yes
1
lcd_e line status
0
5
yes
yes
1
lcd_rs line status
0
6
yes
yes
1
lcd_rw line status
0
31A
7
yes
yes
1
/lcd_cs1 line status
0
0
yes
no
1
KEY_R4 discrete I/O channel trigger status
(bit 6 of port 310 is set to 1)
0
1
yes
no
1
KEY_R5 discrete I/O channel trigger status
(bit 6 of port 310 is set to 1)
0
2
yes
no
1
KEY_C0 discrete I/O channel trigger status
(bit 6 of port 310 is set to 1)
0
3
yes
no
1
KEY_C1 discrete I/O channel trigger status
(bit 6 of port 310 is set to 1)
0
4
yes
no
1
KEY_C2 discrete I/O channel trigger status
(bit 6 of port 310 is set to 1)
0
5
yes
no
1
KEY_C3 discrete I/O channel trigger status
(bit 6 of port 310 is set to 1)
0
6
yes
no
1
KEY_C4 discrete I/O channel trigger status
(bit 6 of port 310 is set to 1)
0
31B
7
yes
no
1
KEY_C5 discrete I/O channel trigger status
(bit 6 of port 310 is set to 1)
0
0
yes
no
1
TXEN_485_COM3 line status
0
1
yes
no
1
TXEN_485_COM4 line status
0
2
yes
no
1
TXEN_485_COM5 line status
0
3
yes
no
1
TXEN_485_COM6 line status
0
4
yes
yes
1
HF_485_COM3 line status
0
5
yes
yes
1
HF_485_COM4 line status
0
6
yes
yes
1
HF_485_COM5 line status
0
31C*
7
yes
yes
1
HF_485_COM6 line status
