ProSoft Technology MVI69-DNP - Manual (Page 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
0 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.
1 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.
2 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.
3 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.
4 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
7 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
0 Bad function code. The function code contained in the master request is not
supported for the specified object/variation.
1 Requested object(s) unknown. Object requested by master is not supported by the
application.
2 Parameters in the qualifier, range or data fields are not valid or out of range for the
slave.
3 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.
4 Request understood but requested operation is already executing. The slave will
never set this bit.
5 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.