Glossary
Distributed I/O system
System Manual, 12/2016, A5E03576849-AG
299
Module in the distributed I/O system. The interface module connects the distributed I/O
system via a fieldbus to the CPU (IO controller) and prepares the data for and from I/O
modules.
IO-Link is a point-to-point connection to conventional and intelligent sensors/actuators by
unshielded standard cables in proven 3-wire technology. IO-Link is downward compatible to
all DI/DQ sensors/actuators. Switching status channel and data channel are designed in
proven 24 V DC technology.
All the modules attached to a mounting rail.
Supply of modules like the interface module, power supply modules, I/O modules, and (if
applicable) sensors and actuators.
Device identification unique worldwide, which is already assigned to each PROFINET device
in the factory. Its 6 bytes are divided into 3 bytes for the manufacturer ID and 3 bytes for the
device ID (serial number). The MAC address is usually legible on the device.
Every industrial machine that falls under the scope of DIN EN 60204 Part 1 (VDE 0113,
Part 1) must be equipped with a main switch that disconnects all electrical equipment from
the network while cleaning, maintenance, and repair work is being carried out, as well as
during long periods of downtime. Usually a switch which can be operated by hand that is
stipulated for electrical or mechanical prevention of a hazard. The main switch can also
function as an EMERGENCY-OFF device.
The main switch must meet the following requirements:
● Externally accessible mechanical rotary lock.
● Only one OFF position and one ON position with allocated stops.
● Two positions labeled "0" and "I". 4th lockable OFF position.
● Cover for the power supply terminals to protect against accidental contact.
● The switching capacity must correspond to AC-23 for motor switches and AC-22 for load-
break switches (utilization category).
● Switch position displayed automatically.
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