Safety application coverage in CIP provides the ability to mix safety devices and standard devices on the same network or wire for seamless integration and increased flexibility. CIP Safety™ provides fail-safe communication between nodes such as safety I/O blocks, safety interlock switches, safety light curtains and safety controllers in both machine and process automation safety applications up to Safety Integrity Level (SIL) 3 according to IEC 61508 standards. CIP Safety has also been adopted by Sercos International.

CIP Safety is made up of high integrity safety services and diagnostics in the application layer and doesn’t require special communications hardware. CIP Safety can also coexist with other application layer standards like CIP Motion and CIP Security. CIP Safety does not prevent communication errors from occurring, but instead it ensures transmission integrity by detecting errors and allowing devices to take appropriate actions as follows:

• All CIP Safety data is produced with a timestamp which allows safety consumers to determine the age of the produced data.
• A Production Identifier is encoded in each data production to ensure that each received message arrives at the correct consumer.
• All safety transfers on CIP Safety use Safety CRCs or checksums to ensure the integrity of the transfer of information.
• Data and CRC or checksum redundancy with cross checking provides an additional measure of protection by detecting possible corruption of transmitted data.
• The CIP Safety protocol is present only in safety devices; this prevents standard devices from masquerading as safety devices.

CIP Safety packets are made up of the following four sections (note that no packet has all four): data, timestamp, time correction and time coordination. When configuring a CIP Safety device over the network, there are measures to ensure integrity of the configuration, such as:

• Safety Network Number which identifies each network path in the system individually, allowing each device to be uniquely identified.
• Configuration Ownership can be enforced to ensure that safety configurations cannot be changed by other devices in the network.

CIP Safety has been certified by TÜV Rheinland as a “black channel” protocol, which means that the safety integrity is not dependent on the physical media. As a black channel protocol, CIP Safety can be communicated with over different wired Ethernet platforms (10, 100 Mbps and 1 Gbps), fiber optics, and wireless systems such as existing WiFi (802.11a/b/g/n/ac). CIP Safety is expected to be forward compatible to new standards like WiFi 6 (802.11ax) and 5G.

CIP Sync™ provides the increased control coordination mechanism needed for industrial automation control applications where absolute time synchronization is vital to achieve real-time synchronization between distributed intelligent devices and systems. CIP Sync™ is compliant with the IEEE-1588™ standard, and allows synchronization accuracy between two devices of fewer than 100 nanoseconds. Real-time synchronization can be achieved over conventional Ethernet systems with a switch-based architecture.

CIP Sync consists of a Time Sync object and associated services that allows users to synchronize devices, including motion axes, using “time.” This synchronization method provides a more flexible and scalable network architecture, ideal for large-scale motion systems. CIP Sync is not restricted by many of the constraints imposed by event-based or time-sliced implementations.

EtherNet/IP™ with CIP Motion™ technology combines the requirements of deterministic, real-time, closed loop motion control with standard, unmodified Ethernet, offering full compliance with Ethernet standards, including IEEE 802.3 and TCP/IP.

EtherNet/IP with CIP Motion technology delivers an open, high bandwidth, high performance solution for multi-axis, distributed motion control. CIP Motion accomplishes this through application profiles that are designed to allow position, speed and torque loops to be set within a drive. Multiple axes can be coordinated for precise, synchronized motion control when combined with the power of ODVA’s CIP Sync™ technology — the IEEE-1588™ compliant Precision Clock Synchronization, which is also mapped into the CIP object model.

EtherNet/IP with CIP Motion is a scalable and comprehensive solution that provides a common application interface and services for general purpose and motion control drives using the same profile. The technology is fully compatible with standard Ethernet topologies such as star and linear.

Multi-axis motion control typically uses event-based synchronization, which requires scheduled, absolute hard delivery of time-critical cyclic data across the network. Jitter of less than 1µs for cyclic data is necessary for precise speed and/or position control, but Ethernet’s CSMA/CD data layer is not capable of delivering data with less than 1µs of jitter.

EtherNet/IP with CIP Motion solves the determinism problem by changing the approach. CIP Motion removes the requirement for strict determinism from the network infrastructure and entrusts the end devices with the timing information necessary to handle the real-time control needs of the application.

EtherNet/IP with CIP Motion can thus deliver the high performance, deterministic control required for closed loop drive operation, using standard, unmodified Ethernet. Clock synchronization of better than 200ns can be readily achieved, meeting the needs of the most demanding motion control applications. Because the clocks in the end devices are tightly synchronized and information in the message is time-stamped, a small amount of jitter in receipt time of the message is unimportant.

CIP Motion Profile

The CIP Motion profile defines extensions focused on drive control:

• Torque, velocity, or position control of servo and variable speed drives
• Drive configuration, status, and diagnostic attributes and services
• Unicast control-to-drive communications
• Multicast peer-to-peer communications allow position and velocity synchronization in drives controlled by multiple distributed controllers
• Centralized and distributed motion support
• Common configuration, status and diagnostic services and common application instruction support for variable speed and servo drives makes those drives interchangeable at the application level.
• IEEE 802.3 and TCP/IP Compliance

Full compliance with IEEE 802.3 and TCP/IP gives CIP Motion many performance advantages:

• Standard Ethernet components (e.g., chips, switches and routers) reduce system cost with their high volume, commercial availability
• Network does not have to be scheduled
• Packet size and content can be dynamically changed, allowing dynamic inclusion or deletion of status or command data and dynamic drive operating mode changes
• Any Ethernet IEEE 802.3 compliant device can reside on the network without special switches or gateways
• Compatible with standard Ethernet topologies such as star and linear
• Performance upgrades to 1 Gigabit/sec and 10 Gigabit/sec are easy for both users and device suppliers.

EtherNet/IP™ is a best-in-class Ethernet communication network that provides users with the tools to deploy standard Ethernet technology (IEEE 802.3 combined with the TCP/IP Suite) in industrial automation applications while enabling Internet and enterprise connectivity…data anytime, anywhere. The Industrial Internet of Things (IIoT) and Industry 4.0 are providing manufacturers with significant opportunity for innovation. To capitalize on this opportunity and be able to connect all devices – not just those connected to controllers – industrial users must invest in networks that support the Internet Protocol. Through its reliance on standard Internet and Ethernet standards, EtherNet/IP is proven, complete and ready for Industry 4.0 and IIoT both today and tomorrow.

EtherNet/IP offers various network topology options including star or linear with standard Ethernet infrastructure devices, or device level ring (DLR) with specially enabled EtherNet/IP devices. QuickConnect™ functionality allows devices to be exchanged rapidly (e.g., a tool changer on a robot arm) while the network is running. Compliance with IEEE Ethernet standards provides users with a choice of network interface speeds — e.g., 10, 100 Mbps and 1 Gbps — and a flexible network architecture compatible with commercially available Ethernet installation options including copper, fiber, fiber ring and wireless. Options for industrially rated devices incorporating IP67 or better rated connectors with module and network status LEDs with device labeling provide ease of use.

Like all CIP Networks, EtherNet/IP utilizes the Common Industrial Protocol (CIP™) for its upper layers. CIP Networks follow the Open Systems Interconnection (OSI) model, which defines a framework for implementing network protocols in seven layers: physical, data link, network, transport, session, presentation and application. Networks that follow this model define a complete suite of network functionality from the physical implementation through the application or user interface layer.

CIP encompasses a comprehensive suite of messages and services for a variety of manufacturing automation applications, including control, safety, security, energy, synchronization & motion, information and network management. As a truly media-independent protocol that is supported by hundreds of vendors around the world, CIP provides users with a unified communication architecture throughout the manufacturing enterprise.

Safety application coverage in CIP provides the ability to mix safety devices and standard devices on the same network or wire for seamless integration and increased flexibility. CIP Safety™ provides fail-safe communication between nodes such as safety I/O blocks, safety interlock switches, safety light curtains and safety controllers in both machine and process automation safety applications up to Safety Integrity Level (SIL) 3 according to IEC 61508 standards. CIP Safety has also been adopted by Sercos International.

CIP Safety is made up of high integrity safety services and diagnostics in the application layer and doesn’t require special communications hardware. CIP Safety can also coexist with other application layer standards like CIP Motion and CIP Security. CIP Safety does not prevent communication errors from occurring, but instead it ensures transmission integrity by detecting errors and allowing devices to take appropriate actions as follows:

• All CIP Safety data is produced with a timestamp which allows safety consumers to determine the age of the produced data.
• A Production Identifier is encoded in each data production to ensure that each received message arrives at the correct consumer.
• All safety transfers on CIP Safety use Safety CRCs or checksums to ensure the integrity of the transfer of information.
• Data and CRC or checksum redundancy with cross checking provides an additional measure of protection by detecting possible corruption of transmitted data.
• The CIP Safety protocol is present only in safety devices; this prevents standard devices from masquerading as safety devices.

CIP Safety packets are made up of the following four sections (note that no packet has all four): data, timestamp, time correction and time coordination. When configuring a CIP Safety device over the network, there are measures to ensure integrity of the configuration, such as:

• Safety Network Number which identifies each network path in the system individually, allowing each device to be uniquely identified.
• Configuration Ownership can be enforced to ensure that safety configurations cannot be changed by other devices in the network.

CIP Safety has been certified by TÜV Rheinland as a “black channel” protocol, which means that the safety integrity is not dependent on the physical media. As a black channel protocol, CIP Safety can be communicated with over different wired Ethernet platforms (10, 100 Mbps and 1 Gbps), fiber optics, and wireless systems such as existing WiFi (802.11a/b/g/n/ac). CIP Safety is expected to be forward compatible to new standards like WiFi 6 (802.11ax) and 5G.

CIP Sync™ provides the increased control coordination mechanism needed for industrial automation control applications where absolute time synchronization is vital to achieve real-time synchronization between distributed intelligent devices and systems. CIP Sync™ is compliant with the IEEE-1588™ standard, and allows synchronization accuracy between two devices of fewer than 100 nanoseconds. Real-time synchronization can be achieved over conventional Ethernet systems with a switch-based architecture.

CIP Sync consists of a Time Sync object and associated services that allows users to synchronize devices, including motion axes, using “time.” This synchronization method provides a more flexible and scalable network architecture, ideal for large-scale motion systems. CIP Sync is not restricted by many of the constraints imposed by event-based or time-sliced implementations.

EtherNet/IP™ with CIP Motion™ technology combines the requirements of deterministic, real-time, closed loop motion control with standard, unmodified Ethernet, offering full compliance with Ethernet standards, including IEEE 802.3 and TCP/IP.

EtherNet/IP with CIP Motion technology delivers an open, high bandwidth, high performance solution for multi-axis, distributed motion control. CIP Motion accomplishes this through application profiles that are designed to allow position, speed and torque loops to be set within a drive. Multiple axes can be coordinated for precise, synchronized motion control when combined with the power of ODVA’s CIP Sync™ technology — the IEEE-1588™ compliant Precision Clock Synchronization, which is also mapped into the CIP object model.

EtherNet/IP with CIP Motion is a scalable and comprehensive solution that provides a common application interface and services for general purpose and motion control drives using the same profile. The technology is fully compatible with standard Ethernet topologies such as star and linear.

Multi-axis motion control typically uses event-based synchronization, which requires scheduled, absolute hard delivery of time-critical cyclic data across the network. Jitter of less than 1µs for cyclic data is necessary for precise speed and/or position control, but Ethernet’s CSMA/CD data layer is not capable of delivering data with less than 1µs of jitter.

EtherNet/IP with CIP Motion solves the determinism problem by changing the approach. CIP Motion removes the requirement for strict determinism from the network infrastructure and entrusts the end devices with the timing information necessary to handle the real-time control needs of the application.

EtherNet/IP with CIP Motion can thus deliver the high performance, deterministic control required for closed loop drive operation, using standard, unmodified Ethernet. Clock synchronization of better than 200ns can be readily achieved, meeting the needs of the most demanding motion control applications. Because the clocks in the end devices are tightly synchronized and information in the message is time-stamped, a small amount of jitter in receipt time of the message is unimportant.

CIP Motion Profile

The CIP Motion profile defines extensions focused on drive control:

• Torque, velocity, or position control of servo and variable speed drives
• Drive configuration, status, and diagnostic attributes and services
• Unicast control-to-drive communications
• Multicast peer-to-peer communications allow position and velocity synchronization in drives controlled by multiple distributed controllers
• Centralized and distributed motion support
• Common configuration, status and diagnostic services and common application instruction support for variable speed and servo drives makes those drives interchangeable at the application level.
• IEEE 802.3 and TCP/IP Compliance

Full compliance with IEEE 802.3 and TCP/IP gives CIP Motion many performance advantages:

• Standard Ethernet components (e.g., chips, switches and routers) reduce system cost with their high volume, commercial availability
• Network does not have to be scheduled
• Packet size and content can be dynamically changed, allowing dynamic inclusion or deletion of status or command data and dynamic drive operating mode changes
• Any Ethernet IEEE 802.3 compliant device can reside on the network without special switches or gateways
• Compatible with standard Ethernet topologies such as star and linear
• Performance upgrades to 1 Gigabit/sec and 10 Gigabit/sec are easy for both users and device suppliers.