ProSoft MVI56E-MNETCR, Руководство пользователя

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MVI56E-MNETCR ♦ ControlLogix Platform Ladder Logic
Modbus TCP/IP Multi-Client Enhanced Communications Module for Remote Chassis User Manual
ProSoft Technology, Inc. Page 79 of 161
3.4 Controller Tag Overview
Controller Tag Description
MNETCR.DATA MNET input and output data transferred between the processor
and the module
MNETCR.CONTROL Governs the data movement between the PLC rack and the
module
MNETCR.STATUS Status information
MNETCR.UTIL Block statistics and generic tags used for internal ladder
processing (DO NOT MODIFY)
The following sections describe each of these controller tag structures in more
detail.
3.4.1 MNETCR.DATA
The controller tags in MNETCR.DATA hold data to be transferred between the
processor and the MVI56E-MNETCR module. This read and write data is
transferred between the processor and the module as "pages," or blocks, of data
up to 40 words long.
The data types for the MNETCR.DATA.ReadData and
MNETCR.DATA.WriteData controller tag arrays are integer arrays containing
variable numbers of elements.
Controller Tag Data Type Description
ReadData INT[x] Data read from module. Array size is equal
to the size set in the configuration.
WriteData INT[x] Data to write to module. Array size is equal
to the size set in the configuration.
MNETCR.DATA.ReadData
ReadData is a controller tag array that automatically adjusts to match the value
entered in the Read Register Count (page 44) parameter of the configuration. For
ease of use, this array should be dimensioned as a multiple of 40 words. This
data is paged up to 40 words at a time from the module to the processor. The
ladder logic places the received data into the proper position in the
ReadData
array. This data is used for status and control in the processor ladder logic.