Proface APL3000B - Node Box PC Manual do Utilizador descarregar pdf (Página 32)

Chapter 2 Specifications

2-9

No.

RS-485

Signal Name Direction Meaning

1 DATA + Input / Output Send/Receive Data (+)

2 DATA - Input / Output Send/Receive Data (-)

3 NC - No Connection

4 NC - No Connection

5 GND - Signal Ground

6 NC - No Connection

7 NC - No Connection

8 NC - No Connection

9 NC - No Connection

FG FG - Frame Ground (Common with SG)

• Be sure to connect pin number 5 (GND) of COM1, COM2 (RS-232C) to the host

unit's Signal Ground terminal.

• Be sure to confirm what settings will be used by the other device and set the slide

switches accordingly. Failure to do so can result in a unit malfunction or damage.

• Whenever changing the PS-A switches, be sure to first turn the PS-A's power

supply OFF. Failure to do so can cause a PS-A malfunction.

• Connect the FG terminal line to the shell.

• FG and SG terminals are internally connected in the PS-A. When connecting to

another device, be sure not to create an SG shorting loop in your system.

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Proface APL3000B - Node Box PC Manual do Utilizador Página 32