Datasheet
Commissioning and configuration
Leuze electronic MA 248i 71
TNT 35/7-24V
12.4 Commissioning via the PROFINET-IO
General information on the PROFINET implementation of the MA 248i
PROFINET-IO communication profile
The communication profile defines how participants serially transmit their data via the
transmission medium.
The
PROFINET-IO
communication profile is designed for efficient data exchange on the field
level. The data exchange with the devices is mainly
cyclical
. For the configuration, operation,
monitoring and alarm handling, however,
acyclic
communication services are also used.
Depending on the communication requirements, PROFINET-IO offers suitable protocols
and transfer methods:
• Real Time communication (RT) via prioritized Ethernet frames for
• Cyclical process data (I/O data stored in the I/O area of the control)
• Neighborhood information
• Address assignment/address resolution via DCP
• TCP/IP communication via standard Ethernet TCP/IP frames for
• Establishing communication and
• Acyclic data exchange, and also for the transfer of various information types such
as:
- Parameters for the configuration of the modules during the establishment of the
communication (write)
- I&M data (Identification & Maintenance functions) (read)
- Reading diagnostic information via RS 232
- Reading I/O data
- Writing device data
Conformance classes
PROFINET-IO devices are categorized into conformance classes to simplify the evaluation
and selection of the devices for the users. The MA 248i can use an existing Ethernet network
infrastructure and corresponds to Conformance Class B (CC-B). Thus, it supports the
following features:
• Cyclical RT communication
• Acyclic TCP/IP communication
•Alarms/diagnostics
• Automatic address assignment
• I&M functionality 0-4
• Neighborhood detection basic functionality
In the factory settings, which can be re-set if necessary through a restart in device
switch position F, the MA 248i supports neighborhood detection.
• In the PLC, the BUS IN connection is detected as Port1 and BUS OUT as Port2.
• FAST Ethernet 100 Base-TX
• Convenient device exchange without engineering tools
• SNMP support