Rockwell Automation 56RF RFID System User Manual - Manual (Page 143)

Rockwell Automation Publication 56RF-UM001A-EN-P - October 2011 143
CIP Information Appendix B
Class 1 Connections Class 1 connections are used to transfer I/O data, and can be established to the
assembly object instances. Each Class 1 connection establishes two data
transports, one consuming and one producing. The heartbeat instances are used
for connections that shall access only inputs. Class 1 uses UDP transport.
• Total numbers of supported Class 1 connections equals 2 (total for:
exclusive owner + input only + listen only)
• Supported API: 2…3200 ms (Note that the minimum API can be higher if
processor resources become a problem)
• T->O Connection type: point-to-point, multicast
• O->T Connection type: point-to-point
• Supported trigger type: cyclic, change-of-state
The producing instance can be assigned to multiple transports, using any
combination of multicast and point-to-point connection types.
Only one Exclusive-owner connection will be supported at each time. If an
Exclusive-owner connection is already established and an originator tries to
establish a new Exclusive-owner connection an “Ownership conflict” (general
status = 0x01, extended status = 0x0106) error code will be returned.
For a connection to be established the requested data sizes must be an exact
match of the connections points that the connection tries to connect to. If the
requested and actual sizes don’t match, an “Invalid connection size” (general
status = 0x01, extended status = 0x0109) error code will be returned.
Exclusive Owner
Connection This connection type is used for controlling the outputs of the module and shall
not be dependent on any other condition. Only one exclusive owner connection
can be opened against the module.
If an exclusive owner connection is already opened “Connection in use” (general
status = 0x01, extend status = 0x0100) shall be returned an error code.
• Connection point O -> T shall be Assembly object, Instance 3, 162 or 166
(162 for product codes <= 0x100 only, 166 for product codes > 0x100
only).
• Connection point T -> O shall be Assembly object, Instance 52, 150 or
151 (150 for product codes <= 0x100 only, 151 for product codes > 0x100
only).