Using Controller Tags MVI69E-MBS ♦ CompactLogix Platform
User Manual Modbus Serial Enhanced Communication Module
Page 86 of 154 ProSoft Technology, Inc.
June 28, 2017
5.3.5 MBS.UTIL
The array is used for internal ladder processing, and must not be modified.
Holds Read Data array size
MBS.UTIL.WriteDataSizeGet
Holds Write Data array size
MBS.UTIL.ReadDataBlkCount
Number of Read Data blocks – this value is the Read
Register Count divided by the Block Transfer Size
MBS.UTIL.WriteDataBlkCount
Number of Write Data blocks – this value is the Write Register
Count divided by the Block Transfer Size
Remainder from the Read Register Count divided by the
Block Transfer Size
Remainder from the Write Register Count divided by the
Block Transfer Size
Computed block offset for data
Latest Read Block ID received from the module
Latest Write Block ID to be sent to the module
Latest Write Block ID used during initialization
Holds variables for configuration file transfer
MBS.UTIL.ConfigFile.WordLength
Length of configuration data to be included in block transfer
MBS.UTIL.ConfigFile.BlockCount
MBS.UTIL.ConfigFile.FileOffset
Offset in configuration file to use as a starting point for
copying over configuration data
MBS.UTIL.ConnectionInputSize
Holds size of the Connection Input array
MBS.UTIL.BlockTransferSize
Size of the backplane transfer blocks
Slot number of the module in the rack
Holds Block ID for Event Command
Keeps an Event Command message from being sent to the
module before the previous Event Command is completed
MBS.UTIL.PollStatusOffset
Offset in slave status data array to use as a starting point for
copying over slave status data
MBS.UTIL.CmdsAddedToQueue
Number of Command Control messages added to the
command queue
MBS.UTIL.CmdControlBlockID
Holds Block ID for Command Control
Keeps a Command Control message from being sent to the
module before the previous Command Control is completed
MBS.UTIL.EventDataCmdPending
Keeps an Event Command with Data message from being
sent to the module before the previous Event Command with
Data is completed
Timer used to clear both cold and warm boot requests
MBS.UTIL.PassThru[ ] Array
Holds variables used for processing pass-through messages