Part number HA029005. Issue 2.0 May-06. 17
2.9
Digital Communications (Optional)
Digital communications uses the Modbus protocol.
The interface may be ordered as RS232 or RS485 (2-
wire).
•
Isolated 240Vac CATII.
RS232 Connections
RS485 Connections
Com
Tx
Rx
HD Common
HE Rx A(+)
HF Tx B(-)
Local Ground
Screen
220
Ω
termination
resistor
* RS232/RS485 2-wire
communications converter
eg Type KD485
Daisy Chain to
further
instrument
Com
220
Ω
termination
resistor on
last
instrument in the line
Twisted pairs
Tx Rx Com
HD Common
HE Rx A(+)
HF Tx B(-)
Rx Tx Com
Screen
RxB/
TxB
RxA/
TxA
*
Summary of Contents for 3204i
Page 47: ...EUROT H ERM 3200iIndicateurs de procédé Manuel Utilisateur FRA ...
Page 48: ......
Page 94: ...46 Référence HA029005FRA Indice 1 0 Septembre 05 S applique à la version 1 02 du logiciel ...
Page 95: ...EUROT H ERM 3200iProzess Anzeige Bedienungsanleitung GER ...
Page 96: ......
Page 139: ......