ProSoft Technology MVI71-DNP User Manual
Page 135
Reference MVI71-DNP
♦ PLC Platform
DNP 3.0 Master/Slave Communication Module
ProSoft Technology, Inc.
Page 135 of 172
August 23, 2007
Word
Block
Offset
Variable Name
Description
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