Proface APL3000B - Node Box PC Manual do Utilizador descarregar pdf (Página 9)

9

External Interfaces

• Always connect the #5 SG (Signal

Ground) of the PL unit to the con-

nected device, especially if the con-

nected device is also not isolated.

Failure to do so may damage the RS-

232C/RS-422/RS-485 circuit.

• Never connect NC to COM1.

• Connect FG to housing.

 Serial Interface

(COM1, COM2, COM3, COM4)

COM1, COM2, COM3, COM4

COM1

*3 To change the communication method, set

the DIP switch located on the circuit board in

the PL unit to the desired position.

For details, see [Internal Switches].

Interfit Bracket #4-40(UNC)

Pin #

RS-232C

Signal Name

Description

1 CD Carrier Detect

2 RD(RXD) Receive Data

3 SD(TXD) Send Data

4 ER(DTR) Data Terminal Ready

5 SG Signal Ground

6 DR(DSR) Data Set Ready

7 RS(RTS) Request to Send

8 CS(CTS) Clear to Send

9CI(RI)/+5V

Called status display/

+5V Output 0.5A

*1

*2

*1 Only COM1 and COM2 are available for

switching to +5 V. COM3 and COM4 are used

exclusively for CI (RI).

*2 Slide switch on the circuit board in the PL unit

switches between CI (RI) and +5 V. For

details, see [Internal Switches].

Shell

FG

Frame Ground

(Common with SG)

Pin #

RS-422

*3

Signal Name

Description

1 RDA Receive Data A(+)

2 RDB Receive Data B(-)

3 SDA Send Data A(+)

4ERA

Data Terminal Ready

A(+)

5 SG Signal Ground

6 CSB Clear to Send B(-)

7 SDB Send Data B(-)

8 CSA Clear to Send A(+)

9ERB

Data Terminal Ready

B(-)

Shell

FG

Frame Ground

(Common with SG)

Pin #

RS-485

*3

Signal Name

Description

1DATA +

Send/Receive Data

(+)

2DATA -

Send/Receive Data

(-)

3 NC No Connection

4 NC No Connection

5 SG Signal Ground

6 NC No Connection

7 NC No Connection

8 NC No Connection

9 NC No Connection

Shell

FG

Frame Ground

(Common with SG)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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