Configuring the DeviceNet Network

Input and Output Tab

DeviceNet Bits

DeviceNet bits are user-defined bits that are assigned within the inputs and outputs tabs. These bits are used with specific assembly blocks to transfer data via the polled connection. DeviceNet bit numbering is the same for all assembly blocks selected; therefore, DN bit 0 MR (Master Receive) under “Index Sel (User Def)” is the same as DN bit 0 MR (Master Receive) for “Index Type.”

Figure 7:

Inputs Tab

Multiple assignments may be made to the same DN bit, and the same I/O function may be mapped to a DN bit as well as to an I/O assignment. This allows the user to indicate drive status simultaneously to multiple devices via hardwire and DeviceNet. When multiple assignments are made, the DN bit is the logical OR condition at he assigned input function.

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Emerson 400501-08 manual Input and Output Tab, DeviceNet Bits