Transfer by Communication

Transfer Logic Overview

Transfer by communication support the following four commands:

• Comm to Normal Source

• Comm to Alternate Source

• Comm to OFF

• Comm to Exit

The command is sent through PC - Modbus. Comm to N/A is equivalent to the voluntary transfer mode on the transfer result. Comm to OFF is equivalent to local control to off in Local Control Mode, but different to Force to Off Mode. The ATSE will transfer to off after receiving the command without any time delay.

When more than one Modbus modules are installed, the ATSE will only response to the module which send the command first. It will not response to any command from other modules until the first module send the Exit command.

Exit Communication Control Mode

There are three ways to exit communication control mode:

• The Modbus master device send exit command to the active Modbus module installed on ATSE.

• Turn off Transfer by Comm from active automatic HMI.

• The active Modbus module is offline.

Transfer Logic of Communication to A (U-U Application)

T11 is internal fixed time delay.

Transfer Logic of Communication to N (U-U Application)

T11 is internal fixed time delay.

Transfer Logic of Communication to A (U-G Application)

T11 is internal fixed time delay.

Transfer Logic of Communication to N (U-G Application)

T11 is internal fixed time delay.

Transfer Logic of Communication to OFF

Comm to OFF is equivalent to local control to off in Local Control Mode, but different to Force to Off Mode. The ATSE will transfer to off after receiving the command without any time delay. For more information, see Local Control Mode.