Reference MVI71-DNPSNET
♦
PLC Platform
Distributed Network Protocol Interface Module
ProSoft Technology, Inc.
Page 69 of 100
September 22, 2008
5.5
MVI71-DNPSNET Status Data
This section contains a listing of the MVI71-DNPSNET module's status data
area.
Word
Variable Name
Description
0
Scan Counter
Program scan counter incremented each time the program
loop is executed.
1 to 2
Product Name (ASCII)
These two words contain the product name of the module
in ASCII format.
3 to 4
Revision (ASCII)
These two words contain the product revision level of the
firmware in ASCII format.
5 to 6
Operating System
Revision (ASCII)
These two words contain the module's internal operating
system revision level in ASCII format.
7 to 8
Production Run Number
(ASCII)
These two words contain the production 'batch' number for
the particular chip in the module in ASCII format.
9
Read Block Count
Total number of blocks transferred from the module to the
processor.
10
Write Block Count
Total number of blocks transferred from the processor to
the module.
11
Parse Block Count
Total number of blocks parsed by the module that were
received from the processor.
12
Block number error
Number of BTW requests that resulted in an incorrect BTW
identification code.
13
DNP Slave Port total
number of message
frames received by slave
This value represents the total number of message frames
that have matched this slaves address on this port. This
count includes message frames which the slave may or
may not be able to parse and respond.
14
DNP Slave Port total
number of response
message frames sent
from slave
This value represents the number of good (non-error)
responses that the slave has sent to the master on this
port. The presumption is that if the slave is responding, the
message was good. Note: This is a frame count.
15
DNP Slave Port total
number of message
frames seen by slave
This value represents the total number of message frames
received by the slave, regardless of the slave address.
16
DNP Slave
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.
17
DNP Slave overrun error
count (Physical Layer
Error)
This value counts the number of times the overrun error
occurs. This error occurs when the mainline Data Link
Layer routine cannot read the data received on the
communication port before it is overwritten.
18
DNP Slave 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.
19
DNP Slave bad CRC
error (Data Link Layer
Error)
This value counts the number of times a bad CRC value is
received in a message.
20
DNP Slave user data
overflow error (Transport
Layer Error)
This value counts the number of times the application layer
receives a message fragment buffer which is too small.
Summary of Contents for InRax MVI71-DNPSNET
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