ProSoft Technology MVI56E-DNPNET - Manual (Page 97)

MVI56E-DNPNET ♦ ControlLogix Platform Contents
DNPNET Ethernet Client/Server Communication Module User Manual
ProSoft Technology, Inc. Page 97 of 140
February 13, 2015
Bad CRC This value represents the number of bad CRC values received from the
server device.
Buff Overflow This value represents the number of buffer overflow messages received
from the server device.
Transaction
Sequence Number
This value represents the number of incorrect transport layer sequence
number errors.
Confirm Retries This value represents the number of data link layer confirm request retries.
Confirm Failures This value represents the number of data link layer confirm request
failures.
No Application Layer
Responses
This value represents the number of application layer no responses to
requests.
Block 9950: Read Command Error List
If the ControlLogix processor sends a block number of 9950 to the module, the application
will respond with an MVI56E-DNPNET Client command error list. Each command in the
system has a data word set aside for its last error code. This value is set by the DNPNET
Client command list task and the values correspond to the errors listed in the error section of
this documentation. This can be accessed 200 commands at a time.
Block format of Command Error List Request sent to the module from the ControlLogix
processor.
Word Offset
in Block Data Field(s) Description
0 Block ID This field contains the value of 9950 identifying the block type
to the module.
1 Number of
Commands to
report
This field contains the number of commands to report in the
response message. The value has a range of 1 to 200.
2 Start Index of First
Command
This parameter sets the index in the command list where to
start. The first command in the list has a value of 0. The last
index in the list has a value of (MaxCommands -1).
3 to 247 Spare Not Used
Block format of Command Error List Response sent to the ControlLogix processor from
module
Word Offset
in Block Data Field(s) Description
0 Reserved Reserved
1 Block ID This is the next block requested by the module.
2 Number of
Commands
reported
This field contains the number of commands contained in the
block that must be processed by the PLC. This field will have a
value of 1 to 200.