TOUCH OPERATING PANEL
HZS 7321
04.09.2020
Page 25
8.5
RS485
•
Because the RS485 requires a defined quiescent point, a pull-up and pull-down resistor
is required in addition to the termination resistor. The resistors are already implemented
in the device.
•
The 120 Ω terminating resistors must be placed at each bus end.
•
Star wiring should be avoided.