Use the Configuration page of the Ethernet communication module’s Properties window to configure:
The following steps present one example of how to configure the size and location of inputs and outputs. Your own project configuration may differ.
Setting Input and Output Memory Addresses and Naming the Module
The Properties window opens when you double-click the left mouse button on the image of the BMX NOC 0401 communication module in either the Local Bus window, or the Project Browser.
When you select the Configuration page, it displays the network, or Alias, name. This is the name assigned to the network channel when the communication module was added to the project.
Use the Configuration page to edit the communication module inputs and outputs, as follows:
To input the above settings, take the following steps:
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Step
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Action
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1
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In the module’s Properties window, select the Configuration page.
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2
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Type in the size and starting position of the inputs and outputs, as follows:
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In the Inputs area:
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In the %MW index field, type in a starting address for inputs, in this example: 0.
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In the Max size field, type in the maximum number of 16-bit words dedicated to inputs, in this example:16.
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In the Outputs area:
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In the %MW index field, type in a starting address for outputs, in this example: 16.
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In the Max size field, type in the maximum number of 16-bit words dedicated to outputs—in this example: 16.
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Notes:
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Locate the inputs and outputs at the beginning of a 4-byte (or 2 word) range. Because address numbering in the M340 platform is zero-based, verify that %MW index input and output settings are configured to start at an even number.
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Allocate separate non-overlapping space to inputs and outputs.
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Control Expert automatically reserves space for two arrays of 32 bytes, as follows:
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Confirm that the %MW space assigned for both inputs and outputs is available in the CPU. For more information, refer to the Control Expert help file topic Processor Configuration Screen.
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3
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In Control Expert select Edit → Validate (or click the Validate  button) to save the address and size settings for inputs and outputs.
NOTE: After you validate module settings for the first time, the module name cannot be edited. If you subsequently decide to change the module name, delete the existing module from the configuration, then add and rename a replacement module.
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Completing the Ethernet Network Configuration
NOTE: After you input configuration settings for the communication module and remote devices, return to the
Configuration page of the Ethernet communication module’s
Properties window and click the
Update application button. This
creates derived data type (DDT) variables that display the following information and commands for your project:
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connection health bits, that display the status of each connection
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connection control bits, you can use to toggle each connection on and off
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the value of input and output items
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module and device configuration settings
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free memory space that has been reserved, but not yet allocated
