Ver.1.02

COM-2PD-LPE

3

Falf-duplex (Setting Switch Circuits)

Falf-duplex (Connecting the RTS, CTS to the remote device)

The figure below shows the circuit associated with the data transfer

mode setting switch and terminator setting switch.

External Connection

Check the information available here when connecting an external

device. In addition to connecting directly to the connector on the board,

you can also connect external devices via a distribution cable or

distribution unit.

- Connecting directly to the port connector.

- Using a distribution cable

When using a COM-2PD-LPE, an alternative to connecting an external

device directly to the connector on the board is to use a connection

conversion cable.

Using the 9-pin D-SUB Connector Conversion Cables

Use a PCE44/9P2S connection conversion cable (purchased separately) to

connect to external devices after dividing into two 9-pin D-SUB male

connector channels.

The SG lines for CH1 – CH2 of the option cable are not connected to the

cable shielding. However, the frame of each connector is connected to

the shielding. This means that the cable shielding is connected to the

body of the PC via the frame of the interface connector.

Note that the option cable is not a twisted-pair cable.

Connecting it directly from the on-board connector

If connecting an external device directly from the connector on the

board, use an connector for creating your own cables.

Pin Assignment

Pin Assignments of Interface Connector

Pin No.

Signal name

Pin No.

Signal name

Pin No.

Signal name

44

SG1

30

CTS1-

15

RxD1+

43

RTS1-

29

RTS1+

14

RxD1-

42

TxD1-

28

CTS1+

13

TxD1+

41

N.C.

27

N.C.

12

N.C.

40

SG2

26

CTS2-

11

RxD2+

39

RTS2-

25

RTS2+

10

RxD2-

38

TxD2-

24

CTS2+

9

TxD2+

37

N.C.

23

N.C.

8

N.C.

36

N.C.

22

N.C.

7

N.C.

35

N.C.

21

N.C.

6

N.C.

34

N.C.

20

N.C.

5

N.C.

33

N.C.

19

N.C.

4

N.C.

32

N.C.

18

N.C.

3

N.C.

31

N.C.

17

N.C.

2

N.C.

---------

16

N.C.

1

N.C.

RxD

TxD

Terminator (Bit9)

Terminator (Bit7)

Terminator (Bit7)

Terminator (Bit9)

TxD

RxD

Not inserted

Inserted

SW2, SW3

MODE

TERM

RxD TxD

CTS RTS

SW2, SW3

MODE

TERM

RxD TxD

CTS RTS

Set the RTS, CTS terminator to OFF.

ON

1 2 3 4 5 6 7 8 9 10

ON

1 2 3 4 5 6 7 8 9 10

RxD

TxD

Terminator (Bit9)

Terminator (Bit7)

Terminator (Bit7)

Terminator (Bit9)

TxD

RxD

CTS

RTS

Terminator (Bit0)

Terminator (Bit8)

Terminator (Bit8)

Terminator (Bit0)

CTS

Not inserted

Inserted

SW2, SW3

MODE

TERM

RxD TxD

CTS RTS

SW2, SW3

MODE

TERM

RxD TxD

CTS RTS

RTS

ON

1 2 3 4 5 6 7 8 9 10

ON

1 2 3 4 5 6 7 8 9 10

TxD+

TxD-

RxD+

RxD-

CTS+

CTS-

RTS+

RTS-

RTS

DCD

DTR

DSR

RI

CTS

SIN

SOUT

162850

or equivalent to it

Terminator

1/2W 100Ω

7

910

8

Terminator

Data transfer mode

- Connector used

44-pin D-SUB, male connector

Thumb screw :

UNC #4-40 (inch screw)

TxD1-

TxD1+

RTS1-

RTS1+

SG1

9

8

7

6

RxD1-

RxD1+

CTS 1+

CTS 1-

5

4

3

2

1

CH1

TxD2-

TxD2+

RTS2-

RTS2+

SG2

9

8

7

6

RxD2-

RxD2+

CTS 2+

CTS 2-

5

4

3

2

1

CH2

CH1

CH2

- Cable

9-conductor shielded cable

Cable length : 250mm

Conductor size : AWG#28

- Connector used

9-pin D-SUB, male connector

Thumb screw : UNC#4-40(inch screw)

- Applicable connectors

17JE-13090-02(D8C) (mfd. by DDK, Female)

CAUTION

44

31

15

1

30

16

Screw nut: UNC#4-40(inch screw)

- Connector used

44-pin D-SUB, female connector

103A-44FGTBBB3(mfd. by COXOC)equivalent

- Applicable connector

101A-44MGTAAA3(mfd. by COXOC, Male)

CN5-D44M (mfd. by CONTEC, Male) (Five connector set)

CN1

15

30

44

31 16 1