ProSoft Technology MVI56-104S User Manual
Page 58
MVI56-104S ♦ ControlLogix Platform
Ladder Logic
IEC 60870-5-104 Server Communication Module
User Manual
Page 58 of 188
ProSoft Technology, Inc.
November 18, 2009
The InStat870 data structure is used to build the top-level data structure,
ModuleDef870. InStat870 contains data from one lower-level data object,
BlkStat870.
MVI56-104S Status Data Definition
This section contains a description of the members present in the InStat870
object from the sample ladder logic. This data is transferred from the module to
the processor as part of each read block. The data is also available inside the
database, configured by two Error Offset parameters in the configuration file.
The following status data is copied to the database through the Error Offset
parameter in the [Backplane Configuration] section of the configuration file.
Offset Parameter
Description
0
Pass Count
This status value contains a counter incremented on each
scan of the module's main loop.
1 to 2
Product Name
This two-word data area contains the text values representing
the product name. These words contain the text "87S5" for the
MVI56 platform.
3 to 4
Revision Number
This two-word data area contains the text values for the
revision number.
5 to 6
Operating System This two-word data area contains the text values for the
operating system number.
7 to 8
Run Number
This two-word data area contains the text values for the run
number.
9
Read Block Count
This word contains the total number of block read operations
successfully executed.
10
Write Block Count
This word contains the total number of block write operations
successfully executed.
11
Parse Block Count This word contains the total number of write blocks
successfully parsed.
12
Error Block Count
This word contains the total number of block transfer errors.
The following status data is copied to the database through the Error Offset
parameter in the [IEC-870-5-104] section of the configuration file.
Offset Parameter
Description
0
t0 Error Count
This word contains the number of t0 errors recognized by the
module.
1
t1 Error Count
This word contains the number of t1 errors recognized by the
module.
2
t2 Error Count
This word contains the number of t2 errors recognized by the
module.
3
t3 Error Count
This word contains the number of t3 errors recognized by the
module.
4
Sequence # Errors
This word contains the number of sequence errors recognized
by the module. When the send sequence number received by
the module does not match the expected sequence number,
the connection is closed and this counter is incremented.