A&D Weighing AD-4407 - Manual (Page 59)

AD-4407 Weighing Indicator Page 57
15. 15. 15. 15. Relay Output & Control Input (OP Relay Output & Control Input (OP Relay Output & Control Input (OP Relay Output & Control Input (OP- - - -05) 05) 05) 05)
Replacing the RS-232C interface with this option, 3-relay outputs and 3-control inputs
can be used with the RS-232C interface of this option.
RS-232C functions are the same as the RS-232C interface described in “13. RS-232C
Interface”.
The solid state relays output the result of comparison.
The control inputs can control the indicator from an external terminal just like the front
panel key operations.
Set the external control function at f13 - f15 of the F-Functions.
When connecting each function pin to the common pin, the indicator makes the action.
Keep a signal width of more than 100ms for the On-time and Off-time.
ON(Make)
OFF(Break)
Pin co Pin co Pin co Pin connections and Circuits nnections and Circuits nnections and Circuits nnections and Circuits
Function Pin No. Signal name Direction Description
1 TXD Output Transmit data
2 RXD Input Received data
3 DSR Output Data set ready
RS-232C
4 SG - Signal ground
5 HI Output Relay output HI
6 OK Output Relay output OK
7 LO Output Relay output LO
Relay
output
8 COM(out) - Relay output common
9 EXT1 Input Control input 1 (f13)
10 EXT2 Input Control input 2 (f14)
11 EXT3 Input Control input 3 (f15)
Control
input
12 COM(in) - Control input common
FG 13 FG - Frame ground (case)
15. Relay Output & Control Input (OP-05)
6:& 4:& &54 5) *+ 1- .1 %1/Q ':6
Relay output RS-232C
Ʈ
':6 ':6 %1/K ()
Control input Case
K
Relay specifications
Maximum voltage
DC50V
Maximum current
DC100mA
Maximum resistance
8 9
More than 100ms More than 100ms