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7.2.4
Change of State/Cyclic Connection example (Acknowledged)
The Change of State/Cyclic connection sets use the connection instance
2 (the polled connection instance) for master to slave data production and
slave to master acknowledgment. Connection instance 4 is used for slave to
master data production and master to slave acknowledgment. If a device does
not support the poll connection and has no output object, then connection
instance 2 does not need to be instantiated. Table 7-6 shows COS/Cyclic I/O
Connection Identifier Fields.
Table 7-6 Identifier fields of COS/Cyclic I/O connection
IDENTIFIER BITS
10
9
8
7
6
5
0
1
1
0
1
Source MAC ID
1
0
Destination MAC ID
1
0
Source MAC ID
1
0
Destination MAC ID
1
0
Destination MAC ID
I-7242D DeviceNet/Modbus RTU Gateway User's Manual, July 2006, Version 1.1
4
3
2
1
0
Slave's I/O Change of State or Cyclic Message
0
1
0
Master's Change of State or Cyclic Acknowledge
Message
0
1
1
Slave's Explicit/ Unconnected Response Messages
1
1
0
Group 2 Only Unconnected Explicit Request
Messages
1
0
0
Master's Explicit Request Messages
I-7242D user manual
IDENTITY USAGE
HEX
RANGE
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