PROFINET

WeOS provides PROFINET™ according to conformance class B (CC-B). When PROFINET support is enabled in WeOS, it is assumed that all unit management is done via PROFINET (TIA portal), i.e., no configuration via CLI, Web, etc.

Table of contents

• Adaptions of WeOS Default Behaviour
  • Factory Default Configuration
  • Discovery, Configuration and Status Retrieval
    • IP Settings
    • MRP Settings
    • Ethernet port settings
  • LLDP Behaviour and TLV Content
  • IEC 61375 Not Supported
• Managing PROFINET
  • Configuration
  • Status Tools on the Device
  • GSDML File Download From the Device
• PROFINET PKG File
  • Updating the PROFINET PKG File
  • Factory Reset

PROFINET Adaptions of Default WeOS Behaviour

Factory Default Configuration

The factory default settings are adapted for units with PROFINET enabled to allow them to be discovered via PROFINET and for the PROFINET factory reset functionality to work properly.

• PROFINET settings:
  • PROFINET is enabled by default
  • The PROFINET interface is set to ‘vlan1’
• Alarm system:
  • A PROFINET trigger is defined in the alarm system
• Interface settings:
  • Interface ‘vlan1’ has address method ‘inet link-local’ (only). That is, no ‘inet dhcp’ for vlan1 in the PROFINET factory default.
• VLAN settings:
  • IGMP snooping is disabled by default on VLAN 1
• MRP:
  • MRP is enabled in client mode (MRC) and MRP profile ‘200’.
  • The lowest ports (e.g., ethX1 and ethX2 on Viper-212A) are defined as ring ports.

PROFINET for Discovery, Configuration and Status Retrieval

PROFINET can be used to discover and manage WeOS devices. The added management interfaces include PROFINET DCP (link-layer protocol) as well as IP/UDP PROFINET DCE access.

In particular, if the WeOS firewall is enabled, please ensure to add adequate input allow rules for PROFINET DCE (UDP RPC). Default UDP port is 34964 (0x8894), and additional UDP ports are opened starting from 49152 (0xC000).

In the factory default setting, PROFINET interface is ‘vlan1’ and IGMP is disabled on the associated VLAN (VLAN 1). If IGMP snooping is enabled on the VLAN of the PROFINET interface, PROFINET group MAC addresses need to be added to FDB.

IP Settings

WeOS allows PROFINET DCP to set a (static) IPv4 address/netmask on the defined PROFINET interface (default ‘vlan1’). When the address is set via PROFINET DCP, any existing static IP address(es) on the PROFINET interface will be removed.

PROFINET DCP can also be used to the unit’s default IP gateway.

MRP Settings

The factory default setting holds an MRP instance. PROFINET DCE can update the MRP mode (MRM or MRC) and MRP ring ports. It can also create a second MRP instance and its associated settings.

Ethernet Port Settings

PROFINET DCE can update the admin status (enabled/disabled) of Ethernet ports. It can also update the speed/duplex and auto-negotiation settings.

LLDP Behaviour and TLV Content

The content of some of WeOS regular LLDP TLVs are adapted for PROFINET capable WeOS units:

• Chassis Id TLV Subtype (and Value): Locally Assigned Subtype
• Port Id TLV Subtype (and Value): Locally Assigned Subtype
• TTL TLV Value: 20 sec
• Port Description TLV Value: Port Name, e.g., ethX1

In addition, the LLDP packets hold PROFINET specific TLVs.

The LLDP transmission interval is 5 seconds for PROFINET capable units.

Use of IEC 61375 TTDP Not Supported

IEC 61375 is not supported on PROFINET capable WeOS units. That is, the WeOS unit cannot run PROFINET and also act as IEC 61375 ETBN. Although it may be possible to enable TTDP on PROFINET units, this is not supported and the behaviour is undefined.

Managing PROFINET

PROFINET is activated on the device by simple toggling it on, and providing it with a VLAN interface to operate on.

Configuration

In order to enable PROFINET from the CLI access the configuration context in the following manner:

viper-26-d0-80:/#> configure
viper-26-d0-80:/config/#> profinet
Activating PROFINET with default settings, type 'abort' to cancel.
profinet: Invalid settings: No interface specified.

viper-26-d0-80:/config/profinet/#>

As can be seen by the prompt, we need to specify the VLAN interface that profinet will serve. By default the interface vlan1 will be available on the device. It is specified as follows:

viper-26-d0-80:/config/profinet/#> iface vlan1
viper-26-d0-80:/config/profinet/#> leave
Applying configuration.
Configuration activated.  Remember "copy run start" to save to flash (NVRAM).
viper-26-d0-80:/#>

PROFINET should now be running, this can be verified by typing the following command:

viper-26-d0-80:/#> show profinet
PROFINET Enabled, running as PID 6805
Ready for AR connection: No, missing station name, missing IP address
No Active Application Relationships
Profinet configuration
MAC Address  : 00:11:b4:26:d0:80
Station-name :
IP Address   : 0.0.0.0
Netmask      : 0.0.0.0
Gateway      : 0.0.0.0

Device-vendor: Viper-212A
Vendor ID    : 0x05c5
Device ID    : 0x5300

Status Tools on the Device

The device also provide a number of CLI commands that can be used to gauge specific profinet information from the device during operation. These can be useful for debugging purposes, or simply if a user wants to check the operational status of profinet from a non-engineering tool.

The profinet CLI commands can be found in the following context:

viper-26-d0-80:/#> profinet
viper-26-d0-80:/profinet/#> help
show config          Show basic profinet configuration info
show ar-connections  Show AR Connection(s) information
show states          Show AR Connection(s) state information
show submodules      Show submodules information
show scheduler       Show profinet scheduler information
show diagnosis       Show profinet diagnosis
show data-check      Show profinet data check configuration
show data-adjust     Show profinet data adjust configuration
show im-records      Show profinet Identification and Maintenance (I&M) Records
show                 Show a summary of the profinet settings
dcp                  Performing a DCP Identify scan and list
______________________________________________________________________________
See "help all" or "help COMMAND" for more online help.
viper-26-d0-80:/profinet/#>

GSDML File Download From the Device

The GSDML file for the associated device can be directly obtained from the device itself. In order to download the file use the Web interface and navigate to Configuration -> System -> Profinet and click the download button.

PROFINET PKG File

In order for the device to know that it should be able to run PROFINET, a special PKG file is applied on the device. By default the provided device should come with such a PKG file already present on the device.

As mentioned, the PKG instructs the device that it is capable of running PROFINET. Further, it also provides the device with its specific PROFINET factory configuration file. In addition, it also includes the correct GSDML file for the device.

Updating the PROFINET PKG File

It may be necessary to upgrade the PROFINET PKG file. This is something that can easily be done from the Web Interface. Navigate to Maintenance -> PKG.

Click Import, a new window will show, select Browse and navigate to the location of the PKG file, then press apply.

Factory Reset

A factory reset can be performed in a number of different ways as described in the Factory Reset section. PROFINET provides an additional method: sending a PROFINET DCP Set with Option 5 (Control) and suboption 6 (Factory reset). This will perform a full factory reset of the device and reboot, in the same manner as the CLI and Web methods.