156
ifm
Device Manual SmartSPS AC14 with EtherNet/IP interface (AC1421, AC1422), Firmware 3.1.2
2015-11-30
Appendix
Fieldbus EtherNet/IP
>
8.7.1
Fieldbus objects
12947
EtherNet/IP is based on the Common Industrial Protocol (CIP). CIP encloses services and applications
in so-called object classes. Each object class has certain features (attributes) and defined interfaces
which can be used to access the functions of the object instance.
The AC142n uses the following object classes:
Assembly instance objects
for the transmission of
device and EtherNet/IP parameters (
→
Parameter data
(
Cyclic process data, diagnostic data (
→
Cyclic data
(
Manufacturer-specific objects
for the transmission of acyclic data (
→
Acyclic data
(
>
Parameter data
12620
The paramater data is transfered via the Configuration Assembly Object:
Object
class
[dec]
Instance
[dec]
Attribute
[dec]
Content
Access
r = read
w = write
max.
no. of
words
4
175
3
Parameter data (module configuration, device-specific parameters)
r/w
122
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