Ver.1.01

COM-4PD-PE

3

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-4PD-PE, an alternative to connecting an

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

connection conversion cable.

- Converting the Interface Connector to 9-pin D-SUB,

Male Connectors

Use a PCE37/9PS connection conversion cable (purchased

separately) to connect to external devices after dividing into four

9-pin D-SUB male connector channels.

<

Specification of “PCE37/9PS” >

< Connection conversion (Option) >

Connection Conversion Cable (37M

9M x 4, 250mm)

: PCE37/9PS

The SG lines for CH1 to CH4 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 directly to the port connector

If connecting an external device directly from the connector on

the board, use a CN5-D37M or equivalent connector.

< Pin Assignment >

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

Example Connection Oneself loop to RTS and CTS in Full

Duplex

Example Connection in Half Duplex

If connecting between external devices and this board with

faulty wiring, it will become the cause of failure.

The COM-4PD-PE is different in specifications, depending on

the board number as listed below.

■COM-4PD-PE

Board No.

No.7412

No.7412A, No.7412B etc.

And all except the left of the board number.

Dimension (mm)

169.33(L) x 110.18 (H)

121.69(L) x 110.18(H)

- Connector used

37-pin D-SUB, male connector

Thumb screw :

UNC #4-40 (inch screw)

- 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)

.

.

.

TxD1-

TxD1+

RTS1-

RTS1+

SG1

9

8

7

6

RxD1-

RxD1+

CTS1+

CTS1-

5

4

3

2

1

CH1

TxD4-

TxD4+

RTS4-

RTS4+

SG4

9

8

7

6

RxD4-

RxD4+

CTS4+

CTS4-

5

4

3

2

1

CH4

CH1

CH2

CH3

CH4

CAUTION

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

RTS1-

CH1 Request to Send -

CTS1+

CH1 Clear to Send +

CTS1-

CH1 Clear to Send -

TxD1+

CH1 Transmit Data +

RxD1-

CH1 Request to Send -

RTS2+

CH2 Request to Send +

RxD2+

CH2 Receive Data +

TxD2-

CH2 Transmit Data -

SG 2

CH2 Signal Ground

RTS4-

CH4 Request to Send -

CTS4+

CH4 Clear to Send +

CTS4-

CH4 Clear to Send -

TxD4+

CH4 Transmit Data +

RxD4-

CH4 Receive Data -

RTS3+

CH3 Request to Send +

RxD3+

CH3 Receive Data +

TxD3-

CH3 Transmit Data -

SG 3

CH3 Signal Ground

N.C.

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

CH1 Request to Send +

RTS1+

CH1 Receive Data +

RxD1+

CH1 Transmit Data -

TxD1-

CH1 Signal Ground

SG 1

CH2 Request to Send - RTS2-

CH2 Clear to Send +

CTS2+

CH2 Clear to Send -

CTS2-

CH2 Transmit Data +

TxD2+

CH2 Receive Data -

RxD2-

CH4 Request to Send +

RTS4+

CH4 Receive Data +

RxD4+

CH4 Transmit Data -

TxD4-

CH4 Signal Ground

SG 4

CH3 Request to Send - RTS3-

CH3 Clear to Send +

CTS3+

CH3 Clear to Send -

CTS3-

CH3 Transmit Data +

TxD3+

CH3 Receive Data -

RxD3-

CN1

RTS-

RxD-

TxD-

TxD+

RxD+

RTS+

CTS+

CTS-

SG

RTS-

RxD-

TxD-

TxD+

RxD+

RTS+

CTS+

CTS-

SG

External device

External device

RxD-

TxD-

TxD+

RxD+

SG

RxD-

TxD-

TxD+

RxD+

SG

External device

TxD-

TxD+

SG

TxD-

TxD+

SG

CAUTION

External Connection

Types of Cable and Example Connections

Different in the specification