ProSoft Technology MVI69L-MBTCP - 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.