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14
DUAL PORT RS-232422/485 SERIAL INTERFACE
E6
E5
U13
E7E8
U12
C9
C10
P1
P3
C8
U11
RP2 RP3
C7
U9
RP4
R8
U18
U8
R9
U6 U7
PORT1
PORT2
R5R4R4
E10E9
D1
PORT1
PORT2
E2
E1
P2
P6
U2
C2
U1
R2
SW2
R1
SW1
C1
V1
PORT1
PORT2
C3
PORT1
PORT2
C1
C5
U4 U5
U3
C6
RP1
PORT2
E3
PORT1
E4
R6
R7
422/485 PORT 2
RS-232 PORT 2
RS-232 PORT 1
422/485 PORT 1
J1 PORT 1J1 PORT 2
1
6
5
9
1
6
5
9
2
3
4
5
6
10
11
12
15
2
3
4
5
6
10
11
12
15
R3
D2
A
B
C
A
B
C
Appendix: Circuit-Board Design