InteliLite4 AMF20 Global Guide
97
The maximal distance between Master controller and Remote display is 1200m for RS485 connection. It is
recommended to use shielded twisted-pair cables that comply with the EIA RS-485 standard to reduce
interference and to achieve maximal distance.
Onboard RS485
The remote display can be connected by onboard RS485 communication port on both the Master controller
and CM-RS232-485 Remote Display or a combination of these.
RS485 Mode: Direct
RS485 Communication speed: 57600 or 115200 bps
Controller address: 1-32
The maximal distance between Master controller and Remote display is 1200m for RS485 connection. It is
recommended to use shielded twisted-pair cables that comply with the EIA RS-485 standard to reduce
interference and to achieve maximal distance.
RS232 + RS485
Master Controller with Two Remote Displays
It is possible to combine two of the previous methods of interconnection and connect two Remote display to
one Master controller concurrently. All parameters and settings are the same as mentioned above.
Note: Onboard RS485 and CM-232-485 communication module can be used to achieve both remote
displays being connected via RS485 for IL4 MRS16 and IL4 AMF25.
Note: IL4 AMF8, IL4AMF9 and IL4 AMF20 as master controller can only have up to two remote displays at
the same time and will need to use RS232 combined with RS485.
5.4.5 Connection process
After powering up, the Remote Display automatically tries to connect to the last known Master controller (if
such configuration exists in Remote display). Otherwise the Remote display searches for any Master
controller connected. It starts to search on internal RS485 line using Master controller address 1 – 32 and
continues with COM 2 (RS485) and COM 1 (RS232). The Remote Display tries two communication speeds
57600 bps and 115200 bps.
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