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The stack offers an interface to access the cyclic data.
The cyclic data is is available in the dual-port memory (DPM) which can be accessed by a host application.
Explicit Messaging (Acyclic
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data)
Acyclic services to 'build in' CIP objects (CIP objects that belong to the dafault object set supported by default CIP object dictionary of the EtherNet/IP Adapter stackfirmware) are handled by the stack itself. If the application needs to store remanent paramters related to those object, this will be indicated by an appropriate indication packet.firmware itself.
In addition to the 'build-in' CIP objects other CIP objects or vendor specific CIP objects can be registered at the stackfirmware, e.g. to support special CIP profiles. In that case, all acyclic services need to be handled by the host application.
Restrictions
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Key Features
- Device Level Ring (DLR) - Media Redundancy
- Address Conflict Detection (ACD)
- Connection Classes: 1, 3Implicit Messaging: class 0 or class 1
- Explicit Messaging Unconnected / Connected (class 3)
- Connection Application Types: Exclusive Owner, Input Only, Listen Only Connections
- Explicit Messaging
- Quality of Service (QoS)
- Object model can be extended by implementing own CIP objects (necessary to support CIP profiles)
- CIP Sync
- QuickConnect (Fast Startup)
- NULL-ForwardOpen
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| Feature | Description |
|---|---|
| Maximum number of input data per assembly instance | 504 bytes per assembly instance |
| Maximum number of output data per assembly instance | 504 bytes per assembly instance |
| Maximum number of assemblies | 10 |
| IO Connection Types (implicit) | Exclusive Owner, Listen Only, Input only |
| IO Connection Trigger Types | Cyclic, minimum 1 ms* |
| Explicit Messages | Connected and unconnected |
| Unconnected Message Manager (UCMM) | supported |
| Max. number of connections | Class 1: 5 Class 3: 10 UCMM: 10 |
| Max. number of user specific objects | 20 |
| Predefined standard objects | Identity Object (0x01) |
| DHCP | supported |
| BOOTP | supported |
| Baud rates | 10 and 100 MBit/s |
| Duplex modes | Half Duplex, Full Duplex, Auto-Negotiation |
| MDI modes | MDI, MDI-X, Auto-MDIX |
| Data transport layer | Ethernet II, IEEE 802.3 |
| Address Conflict Detection (ACD) | supported |
| DLR (ring topology) | supported |
| Integrated switch | supported |
| CIP Reset services | Identity Object Reset Service of Type 0 and 1 |
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