Adam Equipment AE 402 Bedienungsanleitung Seite 9

3.4.2 CONNECTION OF RS-232
RS-232 serial interface is a plug as figure 2 shows:
See section 9 for details of the RS-232 Interface.
3.4.3 CONNECTION OF RELAY DRIVERS
The output to drive external relays is on the circuit board inside the enclosure. To
gain access you must remove the 6 screws securing the front to the rear of the case.
Pass the wires for the relays through the grommet on the rear panel. The wires will
connect to the PCB using the terminal strip P1.
The circuit to control the relays requires an external voltage compatible with the
relays used. For more information see section 10.
2 1
3 4
As viewed from the back of the indicator
Power Connector
Battery Vin
+ - no polarity
Load Cell Input
1: Pin GND, Signal Ground
2: Pin RXD, Received Data
3: Pin TXD, Transmitted Data
RS-232 Interface
© Adam Equipment Company 2010
Clock Battery
CR1220 type
Relay Output
Common
High
OK
Low
Zero