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Ladder Logic MVI56E-MCMR ♦ ControlLogix Platform
User Manual Modbus Communication Module with Reduced Data Block
Page 118 of 225 ProSoft Technology, Inc.
May 13, 2014
4.1 MVI56E-MCMR User Defined Data Types
This section describes the controller tags that are defined in the example logic to
interface with the module. The user can extend these tags to meet the
specifications required for their application, If additional data transfer is required.
4.1.1 Module Status Data and Variables (MCMRModuleDef)
All status and variable data related to the MVI56E-MCMR is stored in a user
defined data type. An instance of the data type is required before the module can
be used. This is done 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
DATA
MCMRDATA (page 118)
Read Data and Write Data
STATUS
MCMRSTATUS (page
119)
Status information in each read block
CONTROL
MCMRCONTROL (page
120)
Command Control Object
UTIL
MCMRUTIL (page 118)
Backplane Object
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.
Backplane Object (MCMRUTIL)
The MCMRUTIL object stores all the variables required for the data transfer
operation between the module and the controller. The LastRead data member is
used as the handshaking byte to indicate the arrival of new data from the
module.
The following table describes the structure of this object.
Name
Data Type
Description
LastRead
INT
Index of last read block
LastWrite
INT
Index of last write block
BlockIndex
INT
Computed block offset for data table
The other members of the object are utilized in the ladder logic to assist in the
data transfer operation.
Module Data Object (MCMRDATA)
Data for the module is stored in two controller tags for the example ladder logic.
The read data (data transferred from the module to the processor) is stored in the
controller tag MCMR.READDATA[ ]. The write data (data transferred from the
processor to the module) is stored in the controller tag MCMR.WRITEDATA[ ].
Separate tags can be constructed for each data type used by the controlled
devices and for each device.
Name
Data Type
Description
ReadData
INT[600]
Data read from module
- MVI56E-MCMR 1
- Your Feedback Please 2
- How to Contact Us 2
- ProSoft Technology 2
- Product Documentation 2
- Important Safety Information 3
- Battery Life Advisory 4
- Contents 5
- 1 Start Here 11
- 1.1 What's New? 12
- 1.2 System Requirements 13
- 1.3 Deployment Checklist 14
- 1.4 Package Contents 16
- 1.5 Setting Jumpers 17
- EVISION of the controller 21
- LOT 0 for the controller 21
- ATA-INT (*Very Important*) 25
- to confirm 29
- ATA-INT (Very Important) 33
- ESSAGE CONFIGURATION TAG 38
- EADDATA and 39
- RITEDATA arrays 39
- PROSOFT CONFIGURATION 48
- UILDER 48
- MODULE icon and right 50
- dialog box 52
- to save 52
- to save your changes 53
- 2.3.1 Overview 55
- 2.3.3 Port Configuration 57
- ES or NO 59
- MDERRPTR 59
- EADDATA array. See 59
- ETRYCOUNT > 0 59
- EADDATA[0], assuming 66
- EADDATA[10] 67
- EADDATA[20] because 16320 68
- EADDATA[30] (bit16480 / 16 = 69
- EADDATA[0] 74
- 2.4.1 Overview 81
- 2.4.3 Slave Configuration 86
- 2.5 Ethernet Configuration 90
- ET UP CONNECTION button 92
- BROWSE DEVICE(S) button to 92
- SSIGN TEMPORARY IP 92
- ONNECT. The Diagnostics menu 94
- 2.7.1 Using CIPconnect 96
- to Connect to the Module 96
- 1756-ENBT. The default path 97
- OWNLOAD to 101
- PATH EDIT 103
- ONSTRUCT 103
- OWNLOAD FROM PC TO DEVICE 106
- OWNLOAD 106
- 3 Verify Communication 107
- 3.1.2 Command Error Codes 110
- 3.1.3 MCM Status Data 114
- 4 Ladder Logic 117
- In This Chapter 123
- 5.1 Ethernet LED Indicators 124
- IAGNOSTICS 126
- EST CONNECTION button to 127
- ONNECT 127
- ELECT FOR PCB 128
- ONNECT button again 128
- IEW MODULE’S WEBPAGE 129
- 5.2.2 The Diagnostics Menu 130
- 5.2.7 Data Analyzer 133
- 5.3.1 Required Hardware 137
- 5.4.2 Troubleshooting 141
- 6 Reference 143
- 6.2 Specifications 145
- 6.3 Functional Overview 148
- VENTTRIGGERP1 for Port 1 or 158
- VENTCMDRESPP1. or 158
- MDCONTROLP1.CMDTRIGGER for 161
- ODBUS PORT 1 COMMANDS or 163
- RROR DELAY 165
- 6.3.4 Master Driver 168
- 6.3.5 Slave Driver 170
- 6.4 Cable Connections 171
- 6.4.3 Ethernet Performance 172
- 6.4.5 RS-422 175
- 6.7.1 Before You Begin 193
- 6.7.2 Overview 193
- MPORT RUNG 194
- MPORT button 195
- THERNET.READ 198
- EADETHERNETMSG tag 199
- THERNET controller tag 199
- THERNET.CONFIG 199
- THERNET.WRITE 200
- RITEETHERNETMSG tag 200
- LOCK.WRITE 202
- RITECLOCKMSG tag 202
- EW MODULE 203
- ELECT MODULE dialog box 204
- 6.8.5 Add the Ladder Logic 207
- Contacting Technical Support 219
- 7.1 Warranty Information 221
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