VM600 networking manual MAVM600-NET/E 10 - 1
Edition 9 - February 2018
Introduction
SETTING UP A PROFINET CONNECTION (CPUM SW VERSION 081 OR LATER)
10 SETTING UP A PROFINET CONNECTION
(CPUM FIRMWARE VERSION 081 OR LATER)
10.1Introduction
This chapter describes the use of the PROFINET software interface for VM600 racks as used
by CPUM cards running firmware version 081 or later. All of the registers and data that are
available through Modbus can be made available through PROFINET for CPUM cards
running this version of the firmware.
This manual describes the PROFINET software interface that supports industrial Ethernet
communications interface for a VM600 rack containing the following cards:
•MPC4
•AMC8.
See Appendix C: MPC4 PROFINET slot definitions for detailed MPC4 Modbus register
mapping information and Appendix D: AMC8 PROFINET slot definitions for detailed AMC8
Modbus register mapping information.
The table of Appendix E: Symbol names includes a list of predefined text description tags for
use with a VM600 system. These can be used as symbol names to more easily identify and
understand the contents of a register (see Figure 10-17).
This chapter includes an example that illustrates how to include a VM600 rack in a
PROFINET network using Siemens SIMATIC STEP 7 and a specific SIMATIC S7 controller.
The principles shown should be the same for any PROFINET system.
10.2PROFINET
PROFINET is a standard for industrial Ethernet defined by PROFINET International (PI), an
umbrella organisation responsible for both the PROFIBUS and PROFINET protocols.
PROFINET is based on industrial Ethernet which has been used in manufacturing plants for
many years and brings Ethernet down to the field level so that you can directly interconnect
to field devices (such as sensors and actuators). In most cases, existing network
infrastructure components (network switches, cables, connectors) are compatible and can be
used with PROFINET.
Visit the PI website for the most up-to-date information on PROFINET:
http://www.profibus.com
10.2.1 PROFINET protocols
PROFINET uses a modular concept and distinguishes between different types of
communication for satisfying various response time requirements:
• TCP/IP for PROFINET CBA (Component Based Automation)
No specific performance requirements: cycle times are in the range of 100 ms.
Typically used for configuration and acyclic (that is, unscheduled and on-demand)
read/write operations.
• Real-time (RT) protocol for PROFINET CBA and PROFINET IO
Increased performance requirements: cycle times are up to 10 ms.
Typically used for standard cyclic (that is, scheduled and repetitive) data transfer and
alarms.
• Isochronous Real-time (IRT) PROFINET IO
Maximum performance requirements: cycle times are less than 1 ms.
Typically used for real-time control applications.
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