Rockwell Automation 1738 Assembly Connections for POINT I/O and ArmorPOINT I/O EtherNet/IP Adapters User Manual
Page 21
Publication 1734-UM016A-EN-P - October 2010
Using an Assembly Connection 15
You can also select the Requested Packet Interval and connection sizes.
For a full discussion on connections sizes, refer to the Configuration
Setting tab step that follows and Calculate the Connection Size. The
defaults reflect an empty system (with the adapter only).
5. In the Details tab, you can select between Point to Point and Multicast
for the Target to Scanner data.
TIP
In RSNetWorx, the 4-byte Run/Idle header is not considered when
calculating the Output Size. When you enter the connection size on
this dialog, make sure to subtract 4 bytes from your calculated size.
Also note that this dialog expresses the size in Words. If your
calculation was performed in Bytes, you must divide by 2.