Epsilon Ei DeviceNet Drive Reference Manual

Host Mode Enable

Host Mode Enable allows the user to decide where the control will occur from the DeviceNet network. Host Mode Enable allows the user to ignore hardwire inputs. Conversely, non-host mode logically OR’s the Inputs with the DeviceNet function.

Enabling the “Host Mode” gives the host (DeviceNet Master) exclusive control of the following parameters:

Index Select and Index Initiate Jog +, Jog -, Jog Fast, Home Initiate

Define Home

Brake Control and Release

All other functions will be logically OR’ed with hardwire and Modbus inputs when in Host mode.

Host mode is useful when access to the hardwire I/O needs to be switched from “DeviceNet only” to “DeviceNet I/O or Hardware I/O.”

Ei-DN Input Processing Logic

 

Host Mode

 

Host Mode

Modbus Index Select

EN

Modbus Home Initiate

EN

Hardwire Index Select

Index Select

Hardwire Home Initiate

Home Initiate

 

 

DeviceNet Index Select

 

DeviceNet Home Initiate

 

 

Host Mode

 

Host Mode

 

 

 

Modbus Index Initiate

EN

Modbus Define Home

EN

Hardwire Index Initiate

Index Initiate

Hardwire Define Home

Define Home

DeviceNet Index Initiate

 

DeviceNet Define Home

 

 

Host Mode

 

Host Mode

Modbus Jog+

EN

Modbus Brake Control

EN

 

Index Jog+

Hardwire Brake Control

Brake Control

 

 

 

DeviceNet Jog+

 

DeviceNet Brake Control

 

 

Host Mode

 

Host Mode

Modbus Jog-

EN

Modbus Brake Release

EN

Hardwire Jog-

Jog-

Hardwire Brake Release

Brake Release

 

 

DeviceNet Jog-

 

DeviceNet Brake Release

 

 

Host Mode

 

 

Modbus Jog Fast

EN

Non-Host Mode Modbus Input

 

Hardwire Jog Fast

Jog Fast

Non-Host Mode Hardwire Input

Non-Host Mode Output

 

DeviceNet Jog Fast

 

Non-Host Mode DeviceNet Input

 

Figure 5: Ei-DN Input Processing Logic Diagram

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Emerson 400501-08 manual Ei-DN Input Processing Logic, Host Mode Enable