Industrial Networks and Controls for Power Supply

Features

One of the most widespread protocols in industrial networks worldwide applies the standard Ethernet to the Common Industrial Protocol (CIP).
The most important feature of Ethernet/IP is that it uses standard Ethernet.

The advantages of adopting standard Ethernet are as follows

• Easy to follow the progress of Ethernet technology
• Transfer Email and files using standard network protocols such as FTP and SMTP.
  Ethernet/IP can mix real-time communication, which is essential for industrial networks, with TCP/IP communication.
  As a result, standard network communications such as file and Email transfers are also possible, making it more versatile and scalable than other protocols.
• Can be implemented on any processor with standard Ethernet
  While other industrial network protocols may require unique protocol specifications at the physical and data link layers, Ethernet/IP uses standard Ethernet, which allows for a wider choice of processors to be supported.

Physical layer

Annual fee or not

To use Ethernet/IP, you need to become a member of ODVA or register as an authorized vendor.
ODVA members: purchase specifications, have a vendor ID and pay an annual fee
Approved Vendor: Purchased specifications, holds Vendor ID

Membership fee

Company with 100 or more employees $6000 / year (¥648,060): Regular Member
Company with less than 100 employees $2000 / year (¥216,020): Associate Member

For regular members, vendor ID registration fees, specification purchase fees, and specification contract renewal fees are all waived.
The above information is from February 2014, details are unknown without further inquiry.

Benefits of becoming a member

• Preferred pricing for specifications and vendor ID subscriptions. Members receive a discount of at least 50%, depending on their membership level.
• Preferred pricing for classes, seminars, workshops, and interoperability events offered by ODVA Members receive a 50% discount.
• Recommended pricing for ODVA test software. Members receive a 50% discount.
• Preferred pricing for conformance testing services. Members receive a 50% discount.

physical layer

The physical layer is not specified, and RS-232 and RS-485 are generally used.

Annual fee or not

Free to use
No restrictions on vendors.

Features

In addition to IO data, synchronization data, functional safety signals, power control data, and diagnostic data, information data can be passed through TCP/IP, the Internet standard for general-purpose communication, to create a digital platform for facilities and equipment inside and outside the factory.
Any topology that can be supported by Ethernet can be selected, taking into account speed, communication cycle, network load, and availability.
The specifications specify a minimum of 31.25μs, which allows for strict real-time communication of control data.
Real-time performance is maintained even when coexisting with information data.

By managing the following three communication standards, PROFINET enables everything from high-speed synchronous control to coexistence with general-purpose Ethernet.

• NT (Non Real-Time)
  The lowest priority level for TCP/IP-based communication. It is used to read and write parameters that do not require real-time.
• RT (Real-Time)
  The VLAN function is used to give priority to RT data compared to NT data for communication. It is possible to build a real-time network of about 10 ms.
• IRT (Isochronous Real-Time)
  It is a protocol to achieve real-time performance above RT, and can synchronize with jitter less than 1μs.

Physical layer

It has been standardized in IEC 61158 and IEC 61784 (Fieldbus).

Annual fee or not

Membership fee to the Japan Profibus Association
Admission Fee Regular member 150,000 yen Supporting members 0 yen
Annual fee Regular member: 100,000 yen Supporting members: 10,000 yen per unit (1 unit or more)

If you are a member

After completion of the test at the test center, the certification fee to the Profibus Association headquarters will be the following price. (Examination fee is not included)
The initial registration fee for the certification of a PROFINET device is 900 Euros and (in case of a device revision) the recurring fee every three years is 450 Euros.

For non-members

The initial registration fee for the certification of a PROFINET device is 3000 Euros and (in case of a device revision) the recurring fee every three years is 1500 Euros.

*As of April 21, 2021

Features

High speed and large data frame size.
It uses the simplest master-slave method as a protocol.
The following three protocols are specified to cover a wide range from factory automation (FA) to process automation (PA).

• PROFIBUS-FMS (Fieldbus Message Specification)
  An object-oriented model, a protocol applied to communication between intelligent stations such as Programmable logic controllers (PLCs), Distributed control systems (DCSs), and computers.
• PROFIBUS-DP (Decentralized Periphery)
  Protocols that enable high-speed data transmission between controllers and field devices such as remote I/O and drives.
• PROFIBUS-PA (Process Automation)
  A protocol that applies explosion-proof measures to the physical layer specified in IEC 1158-2 and enables power to be supplied to each node via a communication cable.

Physical layer