TOUCH OPERATING PANEL
HZS 771
15.07.2020
Page 19
7.5
RS485
•
Because the RS485 requires a defined quiescent point, a pull-up and pull-down resistor
is required in addition to the termination resistor. These resistors are already integrated
into the device.
•
The terminating resistors with 120 Ω must be placed on each end of the bus
•
Star wiring should be avoided