A&D Weighing AD-4407 - Manual (Page 57)

AD-4407 Weighing Indicator Page 55
14. 14. 14. 14. RS RS RS RS- - - -422/RS 422/RS 422/RS 422/RS- - - -48 48 48 485, Relay Output(OP 5, Relay Output(OP 5, Relay Output(OP 5, Relay Output(OP- - - -03) 03) 03) 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 RS-422/RS-485 interface are common to RS-232C except for the
signal system.
The relays output the result of comparison.
Solid-state-relay
Maximum voltage DC50V
Maximum current DC100mA
Maximum resistance 8
Pin connections and Circuits Pin connections and Circuits Pin connections and Circuits Pin connections and Circuits
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
RS-422
RS-485
5 TRM - Terminator resistance(100 )
6 HI Output Relay output HI
7 OK Output Relay output OK
8 LO Output Relay output LO
Relay
output
9 COM - Relay output common
Adaptable connector TM-BLA9 (of accessory)
Switching Between RS Switching Between RS Switching Between RS Switching Between RS- - - -422/RS 422/RS 422/RS 422/RS- - - -485 485 485 485
Switching between RS-422/RS-485 is made with the slide switch (SW1) on the
OP-03 board.
14. RS-422/485, Relay Output (OP-03)
*+ 1- .1 %1/
Relay Output Terminals
RS-422 Output
RS-485 Output
RS-422 Input
RS-485 Input
  
5&# 5&$ 4&# 4&$ 64/
RS-422/RS-485 Terminals
     
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