Ident Numbers
Ident Numbers
Both PROFINET and PROFIBUS devices have unique Ident (ID) numbers allocated to them to assist with engineering, identification and other issues.
An ID allows devices connected to the bus to be identified with a minimum amount of protocol overhead. In addition, the ID number is used to archive files which contain information on device features and configuration (i.e. GSD or GSDML files).
Getting an Ident Number for PROFINET
The Device Identification for PROFINET IO consists of a company key (Vendor_ID) and a manufacturer-specific key (Device_ID). The Vendor_ID is assigned uniquely to a company. The Device_ID can be defined by the manufacturer specifically for the device. PI provides the schemes and the GSDML specification required to create a GSD-File.
GSD-Viewer supports validation and viewing of a GSD-File.
How do i get a vendor ID and what is a device ID?
All PROFINET components have two associated IDs: A Vendor ID and a Device ID. Device manufacturer must obtain a Vendor ID and define a Device ID before testing since both IDs are included in the GSD file.
Vendor IDs are unique, and therefore managed and assigned by PI to each company. Device manufacturers can obtain their PROFINET Vendor ID at no charge by sending an email to: certification{AT}profibus.com. Vendor IDs are the same for PROFIBUS, PROFINET, and IO-Link. If a device manufacturer already has a Vendor ID for PROFIBUS, there is no need to request a new one for PROFINET.
The Device ID is chosen and managed by the device manufacturer. Each device should have a unique Device ID specifically for the device. GSDML Technical Specification fordocument in the PROFINET Test Bundle contains details about Device ID formatting.
Getting an Ident Number for PROFIBUS
An Ident Number (ID number) is required for all PROFIBUS devices using PROFIBUS DP communication (except Master Class 2 devices).
Manufacturers must register each device type with PI and get either a manufacturer and/or profile specific ID number. The ID number is not a serial number. The value range is 0001 Hex to FFFE Hex.
As soon as an ID number for a device type has been assigned to a manufacturer, this number can be used for each manufactured device of this type without renewed registration. If the device is modified technically, it remains associated with the device type only if it is still possible to describe the parameters, modules and options (e.g. modular I/O devices) in a single GSD file.
PROFIBUS Nutzerorganisation e.V. handles the registration of PROFIBUS devices on behalf of PI.
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