Eaton IQ 150S, User & Installation Manual

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IM02601006E www.eaton.com D-9
IQ 250S D: DNP Map
D.8: Internal Indication Bits
Bits implemented in the IQ 250S meter are listed below. All others are always reported as zeroes.
Bad Function
Occurs if the function code in a User Data request is not Read (0x01), Write (0x02), Direct Operate
(0x05), or Direct Operate, No Ack (0x06).
Object Unknown
Occurs if an unsupported object is specified for the Read function. Only objects 10, 20, 30, and 60
are supported.
Out of Range
Occurs for most other errors in a request, such as requesting points that don’t exist or direct
operate requests in unsupported formats.
Buffer Overflow
Occurs if a read request or a read response is too large for its respective buffer. In general, if the
request overflows, there will be no data in the response while if the response overflows at least the
first object will be returned. The largest acceptable request has a length field of 26, i.e. link header
plus 21 bytes more, not counting checksums. The largest possible response has 7 blocks plus the
link header.
Restart
All Stations
These 2 bits are reported in accordance with standard practice.