Ver.1.10

COM-2PD(LPCI)H

3

Board [COM-2PD(LPCI)H] …1

First step guide … 1

COM Setup Disk *1 (CD-ROM) …1

Bracket for PCI …1

*1

The CD-ROM contains the driver software and User’s Guide.

This chapter describes the interface connectors on the board.

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

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.

Specification of “PCE44/9P2S”

- 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)

Connection conversion (Option)

Connection Conversion Cable

(44M

→9M x 2, 250mm)

PCE44/9P2S

CAUTION

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 optional connector CN5-D44M for creating

your own cables.

Pin Assignment

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)

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.

CN1

15

30

44

31 16 1

---------

16

N.C.

1

N.C.

The figures below show examples of how to connect the cable

for the board.

The RS-422A/485 interface works based on a differential signal

whereby the signal is carried by the potential difference

between two lines (+ and -).

Using twisted pair cable is

recommended to improve resistance to noise.

Example Connection RTS and CTS to a External Device in

Full Duplex

RTS-

RxD-

TxD-

TxD+

RxD+

RTS+

CTS+

CTS-

SG

RTS-

RxD-

TxD-

TxD+

RxD+

RTS+

CTS+

CTS-

SG

External device

Example Connection Oneself loop to RTS and CTS in Full

Duplex

External device

RxD-

TxD-

TxD+

RxD+

SG

RxD-

TxD-

TxD+

RxD+

SG

Example Connection in Half Duplex

External device

TxD-

TxD+

SG

TxD-

TxD+

SG

CAUTION

If connecting between external devices and this board with

faulty wiring, it will become the cause of failure.

Packing List

External Connection

Types of Cable and Example Connections