Sirona Intego - System overview INTEGO

64 57 316 D3543
D3543.076.01.04.02 06.2015
27
Sirona Dental Systems GmbH 5Important information
Service Manual INTEGO / INTEGO pro 5.5RS-485
båÖäáëÜ
5.5
RS-485
5.5.1 General
Communication between the DSA and DHT boards takes place via this
interface.
5.5.2 Measurements on the RS-485 interface
In the RS-485 network, there are 2x 100-ohm resistors that, measured in
parallel on the RS-485 line, result in 50 ohms. If you measure 100 ohms
on the RS-485 line with an ohmmeter (when the dental treatment center
is switched off), there is a disruption in the line. In the case of a disruption,
measure the connections between the connectors.
Examples of RS-485 measurements
Resistance = 50 ohms
Cable run OK
Measurement RS-485 + → RS-485 -
Resistance = 100 ohms
Fault in the cable run
Measurement RS-485 + → RS-485 -
Resistance = 0 ohms
Cable run OK
Measurement RS-485 - source → RS-485 - destination
Resistance = 200 ohms
Fault in the cable run
Measurement RS-485 + source → RS-485 + destination