Connect Tech DFlex-4/104 - Manual (Page 69)

Chapter 4: Appendix F - RS-485/422 Options 4-19
DFlex-4/104 User's Manual, ver. 0.04
Figure 14: RS-485/422 SLIM partial schematic
+5 V
GND
NET 2
NET 1
TxD
RTS
RxD
CTS
DCD
TxD A
RTS A
RxD B
CTS B
TxD B
RTS B
RxD A
CTS A
U2
U1
U1
U2
+5 V
Port 1
13
15
11
14
10
1
2
3
9
13
15
14
Net 1
Net 2
Net 3
Net 4
RN 1
(150 ohm)
Pin #
RN 2, RN 3
(1.2k ohm)
Pin #
4
5
3
2
7, 8
5, 6
3, 4
1, 2
Net #
B
A
RN 3 (1.2K ohm) R1
R2
R3
RN 1 (150 ohm)
RN 2 (1.2K ohm)
+5 V
Network detail
SLIM
Pin 29
SLIM
Pin 31
SLIM
Pin 28
SLIM
Pin 32
SLIM
Pin 33
SLIM
Pin 3
SLIM
Pin 5
SLIM
Pin 2
SLIM
Pin 7
SLIM
Pin 9
SLIM
Pin 6
SLIM
Pin 8
SLIM
Pin 21
SLIM
Pin 18
SLIM
Pin 4
NET 4
NET 3 RxD
CTS
DCD
RxD B
CTS B
RxD A
CTS A
U1
U1
+5 V
Port 2
9
10
11
5
7
6
SLIM
Pin 27
SLIM
Pin 23
SLIM
Pin 22
SLIM
Pin 15
SLIM
Pin 17
SLIM
Pin 14
SLIM
Pin 16
DTR
U3
12
13
11
SLIM
Pin 30
TxD
RTS
TxD A
RTS A
TxD B
RTS B
U2
U2
5
7
3
6
2
1
SLIM
Pin 26
SLIM
Pin 24
SLIM
Pin 11
SLIM
Pin 13
SLIM
Pin 10
SLIM
Pin 12
DTR
U3
1
2
3
SLIM
Pin 25
4 12
RS-485/422 SLIM
Partial Schematic
Note: As an RS-485/422 Serial Line Interface Module controls two ports, the
schematic shows the circuit for two ports.