Magelis HMI products from Schneider Electric brands, Modicon and
Telemecanique, are being used to provide continuous monitoring of ground
based air traffic control installations, including radar and instrument
landing systems at Newcastle International airport. The monitors include
one 10.4in touch screen terminal with full colour TFT display, three
5.7in touch screens and a Modicon Momentum PLC. The 5.7in terminals are
located in the control tower, the emergency control tower and control
radar room, where the high contrast displays provide legibility and
clarity in high ambient light conditions, and the 10.4in unit is sited in
the air traffic engineering equipment control room.
Three of the terminals are linked to the PLC using Modbus Plus. The
terminal in the emergency control tower, which is almost 1km from the
main installation, is connected via a Modbus-Ethernet-Modbus link, which
includes two Modbus-Ethernet bridges.