Publication 1756-UM001E-EN-P - August 2002
11-16
Communicate with Another Controller over a ControlNet
™
Network
Step 7: Stagger the
Messages
As you add messages to your project, you may have to coordinate the
execution of the messages. To avoid errors and assure that each
message is processed, follow these rules:
If the number of messages in your application exceeds rules 1 and 2,
then stagger the execution of your messages. Here are some options:
•
Send each message in sequence
•
Send the messages in groups that are within the limits of rules 1
and 2
Step 8: Access
ControlLogix Data
Complete this step for any message that a PLC-5C controller sends to a
ControlLogix controller over an ControlNet network.
A.
Using RSLogix 5 software, open the project for the PLC-5
controller.
B.
Display the set-up screen for the message.
C.
Specify the following parameters:
Rule 1:
Enable no more than 16 messages at one time (including block transfers).
Rule 2:
Enable no more than 10 of the following types of messages at one time:
•
CIP data table reads or writes that are
not
cached
•
CIP generic
•
PLC2, PLC3, PLC5, or SLC (all types)
•
block transfer reads or writes that are
not
cached
IMPORTANT
This procedure uses RSLogix 5
™
software,
revision 3.x.
For this section:
And this item:
Specify:
This PLC-5
Communication Command
PLC-5 Typed Read
or
PLC-5 Typed Write
Data Table Address
starting address of the data in the PLC-5 controller
Size in Elements
number of elements to read or write
Port Number
2
Target Device
Data Table Address
Type, in quotation marks [“ “], the name of the tag in the
ControlLogix controller (e.g., “count”).
MultiHop
Yes
.
Summary of Contents for controllogix 1756-L63
Page 1: ...ControlLogix System 1756 L1 L1Mx L55Mxx L63 User Manual Allen Bradley HMIs...
Page 4: ...Publication 1756 UM001E EN P August 2002 Summary of Changes 2 Notes...
Page 16: ...Publication 1756 UM001E EN P August 2002 Table of Contents x...
Page 268: ...Publication 1756 UM001E EN P August 2002 15 4 Monitor Connections Notes...
Page 276: ...Publication 1756 UM001E EN P August 2002 16 8 Communicate with a DeviceNet Device Notes...
Page 402: ...Publication 1756 UM001E EN P August 2002 24 22 Program Motion Control Notes...
Page 408: ...Publication 1756 UM001E EN P August 2002 25 6 Maintain the 1756 BA1 Battery Notes...
Page 418: ...Publication 1756 UM001E EN P August 2002 B 2 Estimate Execution Time...
Page 420: ...Publication 1756 UM001E EN P August 2002 C 2 Estimate Memory Use...
Page 422: ...Publication 1756 UM001E EN P August 2002 D 2 Determine When Data Is Updated Notes...
Page 424: ...Publication 1756 UM001E EN P August 2002 E 2 Reconfigure an I O module Notes...
Page 428: ...Publication 1756 UM001E EN P August 2002 4 Index...
Page 429: ...Publication 1756 UM001E EN P August 2002 Index 5 Allen Bradley HMIs...
Page 430: ...Publication 1756 UM001E EN P August 2002 6 Index...
Page 435: ...ControlLogix System User Manual Allen Bradley HMIs...