Post Configuration Presentation

Introduction

Post configuration is an option that allows you to modify some parameters of the application without changing the application. Post configuration parameters are defined in a file called Machine.cfg, which is stored in the controller.

By default, all parameters are set in the application.The parameters defined in the Post Configuration file are used instead of the corresponding parameters defined in the application. Not all parameters have to be specified in the Post Configuration file (for example: one parameter can change the IP address without changing the Gateway Address).

Parameters

The Post Configuration file allows you to change network parameters.

Ethernet parameters:

oIP Address

oSubnet Mask

oGateway Address

oTransfer Rate

oIP Config Mode

oDevice Name

oIP Master Address

Serial Line parameters, for each serial line in the application (embedded port or PCI module):

oBaud rate

oParity

oData bits

oStop bit

Profibus parameters, for each Profibus in the application (TM4 module):

oStation address

oBaud rate

NOTE: Parameter updates with a Post Configuration file that impacts parameters used by other devices via a communication port are not updated in the other devices.

For example, if the IP address used by an HMI is updated in the configuration with a Post Configuration file, the HMI uses the previous address. You must update the address used by the HMI independently.

Operating Mode

The Post Configuration file is read after:

oA Reset Warm command

oA Reset Cold command

oA reboot

oAn application download

Refer to Controller States and Behaviors for further details on controller states and transitions.