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ProLinx DNPS ♦ ProLinx Gateway Reference
DNP 3.0 Slave User Manual
Page 66 of 86
ProSoft Technology, Inc.
December 1, 2009
Bit Description
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. Events
may not be generated until this bit is cleared after a restart if configured by the user.
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. Events will not be generated until this bit is cleared.
3.5.2 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.
3.6 IIN Bit Definitions
The internal indication bits are stored in a word that follows the function code in
all response messages. These bits report status and error information to the
master DNP device. Below is a description of the word:
3.6.1 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.