Specifications

Glossary
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31004624 8/2009
IOC object
Island operation control object. A special object that appears in the CANopen object
dictionary when the remote virtual placeholder option is enabled in a CANopen NIM.
It is a 16-bit word that provides the fieldbus master with a mechanism for issuing
reconfiguration and start requests.
IOS object
Island operation status object. A special object that appears in the CANopen object
dictionary when the remote virtual placeholder option is enabled in a CANopen NIM.
It is a 16-bit word that reports the success of reconfiguration and start requests or
records diagnostic information in the event that a request is not completed.
IP
internet protocol. That part of the TCP/IP protocol family that tracks the internet
addresses of nodes, routes outgoing messages, and recognizes incoming
messages.
IP Rating
Ingress Protection rating according to IEC 60529.
IP20 modules are protected against ingress and contact of objects larger than
12.5 mm. The module is not protected against harmful ingress of water.
IP67 modules are completely protected against ingress of dust and contact. Ingress
of water in harmful quantity is not possible when the enclosure is immersed in water
up to 1 m.
L
LAN
local area network. A short-distance data communications network.
light industrial I/O
An Advantys STB I/O module designed at a low cost for less rigorous (e.g.,
intermittent, low-duty-cycle) operating environments. Modules of this type operate in
lower temperature ranges with lower qualification and agency requirements and
limited on-board protection; they usually have limited or no user-configuration
options.
linearity
A measure of how closely a characteristic follows a straight-line function.