Instructions

CONTROLLINO Instruction Manual Page 15 (35)
"RTC" switch (only at CONTROLLINO MINI)
This switch is made for switching the internal RTC (Real Time Clock) onto the SPI bus. If you use
the RTC in your program, the switch has to be in the "1" position, otherwise there would be no
data connection to the RTC.
"ETH" connector (only at CONTROLLINO MAXI and MEGA)
The CONTROLLINO PLCs MAXI and MEGA also have an Ethernet connector. It is marked with the
sign "ETH". This socket is located on the front of the housing and can be connected via an RJ-45
network plug with a computer network, e.g. a "network switch" or "router" using a 1:1 network
cable like CAT5 or CAT7. The two PLCs have a built-in Ethernet chip, type WIZNET W5100, which
enables it to communicate over a network (Local Area Network) with other devices such as a
computer or another PLC. With this feature, it is very simple to integrate CONTROLLINO into an
existing network or to the Internet.
You can use the original examples which are supplied with the Arduino IDE. The CONTROLLINO
PLCs are compatible with the "Arduino Ethernet Shield". The Ethernet chip is on the same SPI bus
as the RTC, this is why it must be activated via a chip select. If you have installed the CONTROL-
LINO libraries this is done automatically.
Two LEDs are also integrated in the Ethernet socket to indicate the Ethernet status.
LED green: LAN connection active (POWER)
LED yellow: Data is transmitted and received