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

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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