PCA-6741 Series Startup Manual
3
JP2: RS-232/422/485 Select
Pin
Function
1-2 (CN10 connector) COM2/RS-232*
3-4 (CN11 connector) COM2/RS-422
5-6 (CN11 connector) COM2/RS-485
JP3: DOC address select
Pin
Address at
1-2
D4000h
3-4
DC000h
1-2, 3-4
CC000h
1-2, 5-6
D0000h
3-4, 5-6
D8000h
2
4
6
1
3
5
2
4
6
1
3
5
2
4
6
1
3
5
RS-232*
RS-422
RS-485
2
4
6
1
3
5
2
4
6
1
3
5
D4000h
DC000h
CC000h
2
4
6
1
3
5
2
4
6
1
3
5
D0000h
D8000h
JP4: Watchdog timer
Pin
Function
1-2
Reset*
2-3
IRQ11
1
2
3
1
2
3
Reset*
IRQ11
Locating connectors (solder side)
*Default Settings
2
4
6
1
3
5
Locating connectors (component side)
P
C
A
-67
40
/6
74
1
CN
1
C
N
2
CN
5
CN
6
C
N
3
CN1
7
CN1
3
CN1
4
CN1
5
CN1
1
CN
9
CN1
6
CN1
8
CN1
2
P
C
A
-6740/67
41
CN
20
DIM
M
