Feldbus-Koppler/-Controller • 85
Fieldbus Controller 750-806
WAGO-I/O-SYSTEM 750
DeviceNet
3.2.7 Special DeviceNet Features of the Controller
3.2.7.1 Connection via the UCMM port
In contrast to the fieldbus Coupler 750-306 as a Group 2 Only Server, the De-
viceNet Controller supports the dynamic connection via the UCMM port (Un-
connected Message Manager Port).
For the Controller, the simultaneous set-up of 5 explicit and 5 dynamic I/O
connections, i.e. the connection with 5 subscribers, is possible.
3.2.7.2 Offline Connection Set
Due to the Offline Connection Set, the fieldbus node can be addressed via the
network when this node has been switched off because of a double MAC ID
and is in a Communication Fault status. After being addressed, the MAC ID of
the fieldbus Controller can be changed using the software.
3.2.7.3 DeviceNet Shutdown
The Device Shutdown allows the fieldbus node to log out from a control in a
defined manner if the node is switched off due to internal faults. This function
can be used in a targeted way in DeviceNet networks subject to very high
safety requirements, such as e.g. in the chemical industry or in semi-conductor
production.
3.2.7.4 Dynamic Assembly
An Assembly Object is used to group data (e.g. I/O data) to form blocks to be
sent as a single message. The static Assembly allows the user to access per-
manently pre-programmed Assembly Instances in the fieldbus Controller. The
dynamic Assembly, on the other hand, offers the possibility to set up Assem-
bly Instances in which process data from various application objects can be
configured as required.
In addition to the I/O data transmission, the dynamic assembly can also be
used for a targeted selection of data which are to be transmitted explicitly via
the fieldbus, or those which are explicitly not to be transmitted via the field-
bus.
Attention
To set the pysical outputs with the PFC either use the dynamic assembly or
the instance 11 of the static assemblies. With this, you do not enter the physi-
cal outputs into the mapping in order to prevent the output data from being
transmitted and temporary overwritten by the fieldbus.
Further information
You can find more details in chapter 5.6.2.2.2 "Dynamic Assembly".
