Controller tag overview, Mbtcp.config, Mbtcp.data – ProSoft Technology MVI69L-MBTCP User Manual
Page 80
Using Controller Tags
MVI69L-MBTCP ♦ CompactLogix Platform
User Manual
Communication Module
Page 80 of 152
ProSoft Technology, Inc.
January 6, 2014
5.3
Controller Tag Overview
Tag Name
Description
MBTCP.CONFIG
Configuration information
MBTCP.DATA
MBTCP input and output data transferred between the processor
and the module
MBTCP.CONTROL
Governs the data movement between the PLC rack and the
module
MBTCP.STATUS
Status information
MBTCP.UTIL
Generic tags used for internal ladder processing (DO NOT
MODIFY)
The following sections describe each of these controller tag structures in more
detail.
5.3.1 MBTCP.CONFIG
When PCB downloads the configuration file from the PC to the processor, the
configuration file data and its CRC are stored in this array.
Edits cannot be done directly in this array. All configuration edits must be done in
PCB since a unique CRC is calculated for data integrity. Any change to the
configuration parameters directly in this array will not match the calculated CRC.
Tag Name
Description
MBTCP.CONFIG.FileData
This parameter contains the MBTCP configuration data after it
has been downloaded from PCB. It is displayed in ASCII format.
Note: MBTCP configuration changes cannot be made directly in
this array; the configuration must be downloaded via PCB.
MBTCP.CONFIG.FileSize
Configuration file size (MBTCP.CONFIG.FileData array) in bytes.
MBTCP.CONFIG.FileCRC32
CRC checksum of the configuration file stored in the array.
MBTCP.CONFIG.FileStatus
Configuration file status. 0 = No file present, 1 = File present
5.3.2 MBTCP.DATA
This array contains the Read Data and Write Data arrays for processor-to-
module communication.
Tag Name
Description
MBTCP.DATA.ReadData
Data area copied from the module to the processor. This 240-
element array stores the Modbus data coming into the module
from the Modbus network.
MBTCP.DATA.WriteData
Data area copied from the processor to the module. This 240-
element array stores the outgoing data sent from the module
to the Modbus network.