A&D OP-05 Manual de instrucciones descargar pdf (Pagina 54)

Page 52 AD-4406 Weighing Indicator

14. RS-422/RS-485, Relay Output (OP-03)

Replacing the RS-232C interface with this option, the RS-422/RS-485 interface can

connect up to 32 indicators and control them from a computer or a PLC.

The functions of the RS-422/RS-485 interface are common to RS-232C except the

signal system.

The relays output the result of comparison.

Solid-state-relay

Maximum voltage 50VDC

Maximum current 100 mA DC

Maximum resistance 8 Ω

Pin connections

Function Pin No. Signal name Direction Description

1 SDA Output Transmission A terminal

2 SDB Output Transmission B terminal

3 RDA Input Receive A terminal

4 RDB Input Receive B terminal

5 TRM -

Terminator resistance (100 Ω)

RS-422

RS-485

6 SG - Signal ground

7 HI Output Relay output HI

8 OK Output Relay output OK

9 LO Output Relay output LO

Relay

output

10 COM - Relay output common

Adaptable connector TM-BLA10 (an accessory)

An AC adapter (an accessory) must be connected to the option board when using the

RS-422 or RS-485 interface. If using relay output only, the AC adapter is not required.

Circuit

14. RS-422/485, Relay Output (OP-03)

HI OK LO COM

Relay Output Terminals

RS-422 Output

RS-485 Output

RS-422 Input

RS-485 Input

78 9

SDA SDB RDA RDB TRM

47kΩ

4.7kΩ

47kΩ

4.7kΩ

100Ω

RS-422/RS-485 Terminals

1 2 3 4 5 6

DC 7V - 10V

AC adapter Jack

(AC adapter is an accessory of OP-03)

Note: Please confirm that the AC adapter type is correct

for your local voltage and receptacle type.

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A&D OP-05 Manual de instrucciones Pagina 54

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