Prosoft-technology MVI69-DNP Manual de usuario descargar pdf (Pagina 103)

Reference MVI69-DNP ♦ CompactLogix or MicroLogix Platform

DNP 3.0 Master/Slave Communication Module

ProSoft Technology, Inc. Page 103 of 129

November 3, 2008

5.5 Internal Indication Word

5.5.1 First Byte

Bit Description

All stations message received. Set when a request is received with the destination

address set to 0xffff. Cleared after next response. Used to let master station know

broadcast received.

Class 1 data available. Set when class 1 data is ready to be sent from the slave to

the master. Master should request class 1 data when this bit is set.

Class 2 data available. Set when class 2 data is ready to be sent from the slave to

the master. Master should request class 2 data when this bit is set.

Class 3 data available. Set when class 3 data is ready to be sent from the slave to

the master. Master should request class 3 data when this bit is set.

Time synchronization required from master. The master should write the date and

time when this bit is set. After receiving the write command the bit will be cleared.

5 Slave digital outputs are in local control. This bit is not used in this application.

6 Not used

Device restart. This bit is set when the slave either warm or cold boots. It is cleared

after a master writes a 0 to the bit.

5.5.2 Second Byte:

Bit Description

Bad function code. The function code contained in the master request is not

supported for the specified object/variation.

Requested object(s) unknown. Object requested by master is not supported by the

application.

Parameters in the qualifier, range or data fields are not valid or out of range for the

slave.

Event buffer(s) or other application buffers have overflowed. This bit is also set if the

slave receives a multi-frame message from the master.

Request understood but requested operation is already executing. The slave will

never set this bit.

Bad configuration. The slave configuration is invalid and should be re-configured. If

the configuration is invalid, the slave will set the invalid parameters to default values

and continue to run. Check error log using debug port.

6 Reserved, always 0.

7 Reserved, always 0.

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Prosoft-technology MVI69-DNP Manual de usuario Pagina 103