Producing A Tag From A Logix5550 Controller To A Controlnet Plc-5 Processor; Consuming A Tag From A Controlnet Plc-5 Processor To A Logix5550 Controller - Allen-Bradley ControlLogix User Manual

Producing a tag from a
Logix5550 Controller to a
ControlNet PLC-5 Processor
Consuming a tag from a
ControlNet PLC-5 Processor to
a Logix5550 Controller
To produce a tag that a ControlNet PLC-5 processor can consume, follow
the steps below. Refer to chapter 6 for an example.
1. Open the RSLogix5000 project.
2. Create a produced tag in the Logix5550 controller.
3. Open the RSNetWorx for ControlNet software.
4. In the ControlNet configuration for the target PLC-5 processor, create a
Receive Scheduled Message.
The input size of the scheduled message must match the number of bytes
in the Logix5550 tag. A produced tag in the Logix5550 controller is
always a multiple of 32 bits (DINT, REAL, or structure).
5. Reschedule (save) the network in RSNetWorx for ControlNet.
The ControlNet PLC-5 controller does not perform type checking. Make
sure the PLC-5 data type can correctly receive the Logix5550 produced tag
to ensure proper data is being received.
To consume a tag from a ControlNet PLC-5 processor, follow the steps
below. Refer to chapter 8 for an example.
1. Open the RSNetWorx for ControlNet software.
2. In the ControlNet configuration for the PLC-5 processor, create a Send
Scheduled Message.
Specify an output size of at least 2 (for a 32 bit double word). The size
must be a multiple of 32 bit double words (specify 2, 4, 6, etc.).
3. Open the RSLogix5000 software.
4. In the controller organizer, add the PLC-5C processor to the I/O
configuration.
5. Create a user-defined structure. The first member is a DINT. The second
member is an INT array. The size of the INT array should match the
output size entered in RSNetWorx.
6. Create a consumed tag of this user-defined type.
• Specify the instance of the Send Scheduled Data entry as the Remote
Instance of the tag.
• The requested packet interval (RPI) can be as low as the network
update time (NUT).
7. Reschedule (save) the network in RSNetWorx for ControlNet.
Creating Produced and Consumed Tags
1756-6.5.3 - December 1999
B-5