Table Of Contents - Comtrol DeviceMaster EtherNet/IP-Modbus EIP-MOD User Manual

Table of Contents

Chapter 1. Introduction........................................................................................................7
1.1. EtherNet/IP-Modbus Gateway Overview.......................................................................................... 7
1.2. System Architecture .............................................................................................................................. 9
1.3. EtherNet/IP to Modbus Translation Layer Architecture............................................................ 10
1.4. Translation Layer Connections ........................................................................................................ 11
1.4.1. Connection Methods Table............................................................................................................. 11
1.4.2. EtherNet/IP Controllers Class1 to/from Shared Memory ............................................................ 12
1.4.3. EtherNet/IP Controllers via Data Mapping to/from Tag/File ...................................................... 12
1.4.4. EtherNet/IP Controllers CIP Modbus Object via MSG Instructions........................................... 13
1.5. Data Type Definitions ......................................................................................................................... 13
1.5.1. Terms and Definitions.................................................................................................................... 14
1.6. What is Modbus? ................................................................................................................................... 16
1.6.1. Modbus/RTU ................................................................................................................................... 16
1.6.2. Modbus/ASCII................................................................................................................................. 17
1.6.3. Modbus/TCP.................................................................................................................................... 18
1.7. Locating the Latest Software and Documentation ...................................................................... 19
Chapter 2. EtherNet/IP Interface Profile (ControlLogix)...........................................21
2.1. Modbus Object (44 Hex, 1 Instance) ................................................................................................. 21
2.1.1. Class Attributes .............................................................................................................................. 21
2.1.2. Instance Attributes......................................................................................................................... 21
2.1.3. Common Services............................................................................................................................ 21
2.1.4. Object Specific Services (Instance Specific) .................................................................................. 22
2.1.4.0.1. Read Discrete Inputs Service (4B Hex) ..................................................................................................22
2.1.4.0.2. Read Coils Service (4C Hex)....................................................................................................................22
2.1.4.0.3. Read Input Registers Service (4D Hex)..................................................................................................22
2.1.4.0.4. Read Holding Registers Service (4E Hex) ..............................................................................................23
2.1.4.0.5. Write Coils Service (4F Hex)...................................................................................................................23
2.1.4.0.6. Write Holding Registers Service (50 Hex)..............................................................................................23
2.1.4.0.7. Modbus Passthrough Service (51 Hex)...................................................................................................23
2.1.4.0.8. Vendor Specific Write Single Coil Service (70 Hex)...............................................................................23
2.1.4.0.9. Vendor Specific Write Single Register Service (71 Hex) .......................................................................23
2.1.4.0.10. Vendor Specific Write Mask Register (72 Hex)....................................................................................23
2.1.4.0.11. Vendor Specific Read/Write Holding Registers (73 Hex) ....................................................................24
2.2. Informational Objects ......................................................................................................................... 24
2.2.1. Identity Object (01 Hex, 1 Instance).............................................................................................. 24
2.2.1.1. Class Attributes .................................................................................................................... 24
2.2.1.2. Instance Attributes ............................................................................................................... 24
2.2.1.3. Status Word........................................................................................................................... 25
2.2.1.4. Common Services .................................................................................................................. 26
2.2.2. Message Router Object (02 Hex).................................................................................................... 27
2.2.2.1. Class Attributes .................................................................................................................... 27
2.2.2.2. Instance Attributes ............................................................................................................... 27
2.2.2.3. Common Services .................................................................................................................. 27
2.2.3. Connection Manager Object (06 Hex)............................................................................................ 28
2.2.3.1. Class Attributes Object (06 hex) .......................................................................................... 28
2.2.3.2. Instance Attributes (06 hex)................................................................................................. 28
2.2.3.3. Common Services Object (06 hex) ........................................................................................ 28
2.2.4. Port Object (F4 Hex - 1 Instance) .................................................................................................. 29
2.2.4.1. Class Attributes .................................................................................................................... 29
2.2.4.2. Instance Attributes (F4 Hex, Instance 1) ............................................................................ 29
2.2.4.3. Instance Attributes (F4 Hex, Instance 2) ............................................................................ 30
DeviceMaster EIP-MOD User Guide: 2000664 Rev. A Table of Contents - 3