ProSoft Technology MVI69-DNP - Manual (Page 98)

MVI69-DNP ♦ CompactLogix or MicroLogix Platform Reference
DNP 3.0 Master/Slave Communication Module
Page 98 of 129 ProSoft Technology, Inc.
November 3, 2008
Word Block
Offset Variable Name Description
50 52 DNP Master Port
Application Layer
Receive Memory
Allocation Error Count This value represents the number of memory
allocation errors for application layer receive
blocks.
51 53 DNP Master Port
Application Layer
Transmit Memory
Allocation Error Count This value represents the number of memory
allocation errors for application layer transmit
blocks.
52 54 DNP Master
Synchronization Error
Count (Physical Layer
Error) This value counts the number of times a sync
error occurs. The error occurs when extra bytes
are received before the start bytes (0x05 and
0x64) are received.
53 55 DNP Master Length Error
Count (Physical Layer
Error) This value counts the number of times an
invalid length byte is received. If the length of
the message does not match the length value
in the message, this error occurs.
54 56 DNP Master Bad CRC
Error Count (Physical
Layer Error) This value counts the number of times a bad
CRC value is received in a message.
55 57 Scan Counter LSB Program scan counter
56 58 Scan Counter MSB
57 59 Free Memory LSB Free memory in module
58 60 Free Memory MSB
59 61 DNP Slave Port Transmit
State Value of the DNP Slave state machine for
transmit.
60 62 DNP Float Event Count Total number of events generated for analog
floating-point input data points.
61 63 DNP Double Event
Count Total number of events generated for analog
double, floating-point input data points.
62 64 Event Message Queue
Count Number of event messages waiting to send to
processor.
63 65 Event Message Queue
Overflow Flag to indicate if the event message queue
has overflowed. If more than 200 event
messages are received on the master port and
they are not sent to the processor, this flag will
be set (1). The flag will clear after the
messages are sent to the processor.
64 to 77 66 to 79 Reserved Future Use
78 80 Error_List[0] First value in error list
79 81 Error_List[1] Second value in error list
- - - -
137 139 Error_List[59] Last value in error list