Prosoft-technology MVI69-HART Manual de usuario descargar pdf (Pagina 49)

MVI69-HART ♦ CompactLogix Platform Ladder Logic

HART Multi-drop Master Communication Module User Manual

ProSoft Technology, Inc. Page 49 of 169

March 29, 2012

3.1.2 Module Status Data and Variables (HARTModuleDef)

All status and variable data related to the MVI69-HART is stored in a user-

defined data type. An instance of the data type is required before the module can

be used. This is accomplished by declaring a variable of the data type in the

Controller Tags Edit Tags dialog box. The following table describes the structure

of this object.

Name Data Type Description

GenStat HARTStat General status information

BP HARTBackplane Data to handle backplane logic

Auto_Poll HARTAutoPoll[10] Auto-PollData

ByteData SINT[1000]

BlockTransferSize INT

This object contains objects that define variables for the module and status data

related to the module. Each of these object types is discussed in the following

topics of the document.

Status Object (HARTStat)

This object stores the status data of the module. The HARTStat object (shown in

the following example) is updated each time a read block is received by the

processor. Use this data to monitor the state of the module at a "real-time" rate.

Name Data Type Description

Scan_Cnt INT Program Scan Counter

Product_Name SINT[4] Product Code

Rev_Level SINT[4] Revision

Op_Sys SINT[4] Operating system revision

Run_Number SINT[4] Run number

Blk_Rd_Count INT Number of block read transfers

Blk_Wr_Count INT Number of block write transfers

Blk_Parse_Cnt INT Number of blocks parsed by module

Blk_Resv INT Reserved

Blk_Cmd INT Number of command enable/disable blocks

Blk_Err INT Number of block errors

ChStat HARTCHStat[2] Channel Status Data

Within the HARTStat objects are objects containing the status information for

each application port (HARTCHStat). Refer to Status Data Definition (page 109)

for a complete listing of the data stored in this object.

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Prosoft-technology MVI69-HART Manual de usuario Pagina 49