Other Devices With Rs232 Interface, Ek220 Battery Powered; Other Devices With Rs232 Interface, Ek220 With External Power Supply - Elster EK220 Operating Instructions And Installation Information

Volume Conversion Device EK220

5.7.4 Other devices with RS232 interface, EK220 battery powered

F
For this application the connection of the external power supply is not possible.
Connection diagram:
EK220
TxD
RxD
Ri
GND
DTR
DCD

5.7.5 Other devices with RS232 interface, EK220 with external power supply

F
For this application the EK220 needs an external power supply.
Connection diagram:
EK220
TxD
RxD
Uext
GND
DTR
DCD
100
®
¬
¬
not connected
®
¬
not connected
Connected device
(RS232)
RxD
TxD
Ri
GND
Connected device
(RS232)
RxD
TxD
Power supply +
Power supply -
© Elster GmbH