Mcm Status Data - ProSoft MVI56E-MCMR User Manual

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Transferring the Command Error List to the Processor
You can transfer the command error list to the processor from the module
database. To place the table in the database, set the Command Error Pointer
(MCMR.P
ORT
In the sample ladder, the MCMR.P
1100. This will cause the error value of command 0 to be placed at database
address 1100. Each command error value occupies one database word. The
error value for command 1 will be in location 1101 and the remaining values in
consecutive database locations.
To transfer this table to the processor, refer to Command Error Codes (page
108). Make sure that the Command Error table is in the database area covered
by the Read Data (MCMR.M
MCMR.M D
OD

3.1.3 MCM Status Data

Status information can also be obtained from the MVI56E-MCMR module by
checking the MCMR.STATUS.P
If your system is working correctly, you will see C
and R
ESPONSES
incrementing, determine what command is causing the error (using the error
code defined in the previous section (page 108)) and correct the issue causing
the error.
Note: This information is not as detailed as the individual error codes, but they can help to
troubleshoot your application.
Also within the MCMR.STATUS location is the parameters for Last Error and
Previous Error, shown below.
This indicates the command index that last generated an error and does not
indicate a command currently in error. In the above example, a value of 0 in
P 1L E
ORT AST RR
C 0. This does not indicate that this command is currently in error. The
OMMAND
value in MCMR.STATUS.P
C 0 generated an error, M
OMMAND
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1.C E P ) parameter to the database location desired.
MD RR TR
ORT
D
OD EF
.R R C ).
EF EAD EG NT
XE
RT
all incrementing together. If you see that C
indicates that the last error was generated by M
1P
ORT REVIOUS
ODBUS
MVI56E-MCMR ♦ ControlLogix Platform
Modbus Communication Module with Reduced Data Block
1.C E P tag is set to a value of
MD RR TR
.R S R and
EAD TART EG
location. Below is a sample.
RRS
R
MD EQ
E indicates that before M
RR
P 1 C
ORT OMMAND
, C R , R
MD ESP EQUESTS
E is
MD RR
P 1
ODBUS ORT
ASTER
1 posted an error.
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