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Configuring the MVI56E-MCMR Module MVI56E-MCMR ♦ ControlLogix Platform
User Manual Modbus Communication Module with Reduced Data Block
Page 68 of 225 ProSoft Technology, Inc.
May 13, 2014
Read Coil Status 0x (Modbus Function Code 1)
Modbus Function Code 1 reads the Coils addressed at 0001 to 9999 from a
slave device. These are bit values that are read using Modbus Function Code 1,
and can be written to using Function Code 5 or 15. Within a Slave device, this is
an individual bit value. Thus, the Internal Address field must be defined down to
the bit level within your MasterCmd.
The following illustration shows a sample command to read Modbus addresses
0321 to 0480 from Modbus Slave Device Address 1.
Parameter
Description
Enable = 1
The module will send the command every time it goes through the
command list.
Internal Address = 16320
Places the data read from the slave device into the module at
address 16320. Internal Address 16320 of the module memory will be
copied into the tag MCMR.DATA.READDATA[20] because 16320
represents a bit address within the memory of the MVI56E-MCMR
module (16320 / 16 = register 1020).
Reg Count = 160
Reads 160 consecutive bits from the Slave device.
Node Address = 1
Issues the Modbus command to Modbus Slave Device Address 1.
Modbus Function =1
Issues Modbus Function Code 1 to Read Coils.
MB Address in Device =
320
Function Code 1, MB Address in Device of 320 will read address
0321
Along with a count of 160, this command reads 0321 to 0480.
- 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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