Rockwell-automation DeviceLogix System User Manual Manual de usuario descargar pdf (Pagina 185)

Publication RA-UM003B-EN-P - February 2010 185

RSNetWorx for DeviceNet Software and the DeviceLogix Editors Appendix B

Understand Produced Network I/O

(also known as Network Outputs)

Under normal conditions, an I/O device produces the state of its

inputs and the status of any fault information on the device. However

with local logic running on a device, a master controller sometimes

needs to know the results of some intermediate state or value of logic.

Using a special I/O assembly containing network outputs, it is

possible for the device to report the state of any portion of the logic.

Each network output has a space reserved for it in the module’s

produced I/O assembly. When you connect this network output to

something in the logic, those results are reported in the produced

data.

In the following example, you can see when hardware inputs 0 and 1

are on at the same time. This is reported in Network Output 0.

Network Output 1 reports when Faults have occurred. Both of these

pieces of information are reported in the produced I/O data shown

below the example.

Produced I/O Data

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Byte 0 In 7 In 6 In 5 In 4 In 3 In 2 In 1 In 0

Byte 1 OPWR Logic Ena

Byte 2 Out 7 Out 6 Out 5 Out 4 Out 3 Out 2 Out 1 Out 0

Byte 3 Network

Output 7

Network

Output 6

Network

Output 5

Network

Output 4

Network

Output 3

Network

Output 2

Network

Output 1

Network

Output 0

All data in the assembly including Network Outputs are capable of causing a Change of State production.

OPWR = Output Power; Logic Enabled = DeviceLogix Enabled

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Rockwell-automation DeviceLogix System User Manual Manual de usuario Pagina 185