Download Controller Examples for EtherNet/IP Network

Chapter 1
Configuring the I/O
Figure 21 - MicroLogix 1100/1400 Message Configuration Dialog Boxes for the Logic
Command, Reference, and DL to Net Datalinks
General Tab: This Controller
Setting
Channel
1 (integral). Controller port to which the network is connected.
Communication Command
500CPU Write. The controller type and command type for the controller to read or write data.
Because the MicroLogix 1100 is part of the SLC 500 controller family, the ‘500CPU’ controller type
was selected. The ‘Write’ command type was selected to write data to the drive.
Data Table Address (1)
N20:37. An unused controller data table address containing the data to be written to the drive.
Size in Elements (2)
36. Number of elements (words) to be transferred. Each element size is a 16-bit integer.
General Tab: Target Device
Setting
Message Timeout
5. Message timeout duration in seconds.
Data Table Address (3)
N45:0. Specific starting address of the destination file in the drive.
Routing Information File
RI9:2. An unused routing information file for the controller.
MultiHop Tab
Setting
To Address
10.91.100.79. The IP address of the option module connected to the drive.
(1) For details on data table addresses for this example project, see Table 3 on page 43.
(2) For details to determine element size for a specific drive, see Understanding Controller Data Table Addresses on page 42.
(3) For N-File details, see N-Files on page 89.
36
TIP
This message will error out if the Control Timeout value is not changed from a
non-zero value. See page 31 for writing a value to the Control Timeout.
TIP
If the controller is controlling more than one drive, it is recommended to
intersperse the control I/O messaging for each drive to conserve network
bandwidth and decrease response time. That is, sequence the message
instructions for each drive so that its group of messages will occur at a different
time than those for another drive.
Rockwell Automation Publication 750COM-AT001A-EN-P - August 2012