Chapter 4 - Infrastructure design considerations
16
Version 2.0.0.0
July 7, 2017
.
Daisy-chained xControl LCD set up
In this configuration, an EIA-485 connection is made between the first xControl LCD and a
NION. The remaining xControl LCDs are daisy-chained to the first unit. The NION is
connected to a power outlet, as well as the control and CobraNet networks.
The switch at the rear of the xControl LCDs numbered 1-3 is set to
OUT
. The switch at the rear
of xControl LCD number 4 is set to
IN
.
Daisy-chained setup with more than 16 units
When you want to connect more than 16 xControl LCDs to a single NION, you must consider
the power requirements. Each xControl LCD requires approximately 30mA of power to
operate. The NION RS-485 port can supply a maximum of 0.5A (see
RS-422/485 serial port in
RS-485 mode
in the
NION Hardware Manual
). Therefore, up to 16 devices can be
daisy-chained directly to the port. In order to connect additional devices, an external power
supply is required.
