ProSoft Technology MVI46-DNP - Manual (Page 94)

MVI46-DNP ♦ SLC Platform Reference
Master/Slave Communication Module
Page 94 of 143 ProSoft Technology, Inc.
August 23, 2007
Example Address Word Data Address Variable Name Description
N11:2 2 M1: .1538 DNP Slave Port total
number of message
frames received by
slave This value represents the total number of
message frames that have matched this slave's
address on this port. This count includes
message frames which the slave may or may
not be able to parse and respond.
N11:3 3 M1: .1539 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.
N11:4 4 M1: .1540 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.
N11:5 5 M1: .1541 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.
N11:6 6 M1: .1542 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.
N11:7 7 M1: .1543 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.
N11:8 8 M1: .1544 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.
N11:9 9 M1: .1545 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.
N11:10 10 M1: .1546 DNP Slave sequence
error (Transport Layer
Error) This value counts the number of times the
sequence numbers of multi-frame request
fragments do not increment correctly.
N11:11 11 M1: .1547 DNP Slave address
error (Transport Layer
Error) This value counts the number of times the
source addresses contained in a multi-frame
request fragments do not match.
N11:12 12 M1: .1548 DNP Slave Binary Input
Event count This value contains the total number of binary
input events which have occurred.
N11:13 13 M1: .1549 DNP Slave Binary Input
Event count in buffer This value represents the number of binary
input events which are waiting to be sent to the
master.
N11:14 14 M1: .1550 DNP Slave Analog
Input Event count This value contains the total number of analog
input events which have occurred.
N11:15 15 M1: .1551 DNP Slave Analog
Input Event count in
buffer This value represents the number of analog
input events which are waiting to be sent to the
master.
N11:16 16 M1: .1552 DNP Slave bad
function code error
(Application Layer
Error) This value counts the number of times a bad
function code for a selected object/variation is
received by the slave device.