Rockwell-automation 5730 DriveLogix5730 Controller for PowerFlex 700S Manual de usuario descargar pdf (Pagina 149)

Communicating with Devices on a ControlNet Link 7-9

Sending Messages

The DriveLogix5730 controller can send MSG instructions to other

controllers over a ControlNet link. Each MSG instruction requires you to

specify a target and an address within the target. The number of messages

that a device can support depends on the type of message and the type of

device:

Important: Revision 15.xx of DriveLogix firmware adds more stringent

range checks when reading to or writing from tags. Message

packets are limited to 240 bytes. This could cause some MSG

instructions that worked in previous firmware revisions to not

work in revision 15.xx firmware. For example, use a CIP

Generic MSG instruction to perform a Get Attribute Single

service. The attribute is 4 bytes in length. Assume the

destination tag is an INT data type (2 bytes in length). In

revision 13.xx firmware, the MSG instruction places the first 2

bytes of the attribute in the destination tag. In revision 15.xx

6. Enter a name and path for the network configuration.

ahw0932.tif

ahw0928.tif

7. Click OK to optimize and reschedule the connections.

This device:

Support this many

unconnected messages:

Support this many

connected messages:

1756-CNB or 1756-CNBR module

(for a Logix5550 controller)

20 64

1788-CNx daughtercard

(for a DriveLogix controller)

532

with a maximum of 9 scheduled

ControlNet PLC-5 controller 32 128

1 2 ... 144 145 146 147 148 149 150 151 152 153 154 ... 216 217

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Rockwell-automation 5730 DriveLogix5730 Controller for PowerFlex 700S Manual de usuario Pagina 149