AD-4405A Weighing Indicator
Page
71
20. Current Loop Output (OP-08)
Replacing the RS-232C interface with this option, current loop output, 3-relay outputs
and 1-control input can be used with the RS-232C interface of this option.
RS-232C functions and pin connections are the same as the RS-232C interface
described in “16. RS-232C Interface”.
The control input can control the indicator from an external terminal just like the front
panel key operations.
Set the external control function at
f15
of the F-Functions.
When connecting the function pin and the common pin, the indicator makes the action.
Keep a signal width of more than 100 ms for the On-time and Off-time.
ON
(Make)
More than 100 ms More than 100 ms
OFF
(Break)
The relays output the result of comparison.
Solid-state-relay
Maximum voltage
50VDC
Maximum current
100mA DC
Maximum resistance 8
Pin connections (DIN 8pin connector)
Function
Pin No. Signal name Direction Description
1
HI
Output
Relay output HI
6
OK
Output
Relay output OK
4
LO
Output
Relay output LO
Relay
output
8
COM(out)
-
Relay common terminal
3
CL1
Output
Current loop output 1
Current
loop
5
CL2
Output
Current loop output 2
7
EXT3
Input
Control input 3 (
f15
)
Control
input
2
COM(in)
-
Control input common
Adaptable
connector
JA-TCP0586 (provided with the OP-08)
Circuits
Current loop output
HI
OK
LO
COM(out)
i
EXT3
～
+7 to 9V
680
＋
COM
(in)
～
－
DIN connector
of OP-08
Control input Relay output
20. Current Loop Output (OP-08)
