ProSoft Technology MVI69-DNP User 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