ProSoft Technology MVI56E-MNETCR User Manual
Page 73
MVI56E-MNETCR ♦ ControlLogix Platform
Ladder Logic
Modbus TCP/IP Multi Client Enhanced Communications Module for Remote Chassis
User Manual
ProSoft Technology, Inc.
Page 73 of 159
June 14, 2011
3.1.1 User Data Object (MNETCRDATA)
These objects hold data to be transferred between the processor and the
MVI56E-MNETCR module. The user data is the read and write data transferred
between the processor and the module as "pages" of data up to 200 words long.
Name
Data Type
Description
ReadData
INT[600]
Data Read from the Module. Set array equal to
the size set in the Configuration file.
WriteData
INT[600]
Data Write to the Module. Set array equal to
the size set in the Configuration file.
ReadData is a controller tag array that should be sized to match the value
entered in the R
EAD
R
EGISTER
C
OUNT
parameter of the .CFG file or in ProSoft
Configuration Builder (PCB) (page 50). For ease of use, both this array and the
R
EAD
R
EGISTER
C
OUNT
should be dimensioned in even increments of 40 words.
This data is paged up to 40 words at a time from the module to the processor.
The ReadData ladder logic task places the data received into the proper position
in the MNETCR.DATA.ReadData array. The data received in the ReadData array
will contain status and control information sent by other nodes on the network for
use by processor logic. The ReadData array may also be used to hold certain
module status and error data which can then be monitored by processor logic.
WriteData is a controller tag array that should be sized to match the value
entered in the W
RITE
R
EGISTER
C
OUNT
parameter of the .CFG file or in PCB
(page 51). For ease of use, both this array and the W
RITE
R
EGISTER
C
OUNT
parameter should be dimensioned in even increments of 40 words. This data is
paged up to 40 words at a time from the processor to the module. The WriteData
ladder logic task gets the data from the proper position in the
MNETCR.DATA.WriteData and puts that data into the output image for transfer
to the module. Once the data has been stored in the module's database, it is
available for use as status and control information by other nodes on the
network.