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I'm trying to get an Allen-Bradley Point I/O DeviceNet adapter to work with a non-AB DeviceNET master. It says I need RSNetWorx for DeviceNET to configure the PointBus (the I/O modules in the Point I/O rack). I can't connect RSNetWorx to it without some kind of Allen-Bradley DeviceNET master. Can this work? |
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You can get it to work in a basic fashion using the Auto Start Mode of the 1734-ADN. Enabling Auto Start Mode will do a quick configuration of the PointBus and get everything communicating, and then you can configure it as a generic DeviceNET slave. Here are the parameters of the 1734-ADN module (comma separated, so you should be able to bring this into Excel):
Note that the Class, Instance, and Attribute columns are in HEX. So, use your DeviceNET master software to write the value 1 to parameter 5. That should get everything communicating (give it a minute). After that, execute some Reads from parameters 7 through 10 to get the mapped I/O sizes for each type. By default your outputs are polled and your inputs are change-of-state. All of them include 2 bytes (in or out) for the head module itself, so your inputs will start at byte index 2 (as in 0, 1, 2). Look in the 1734-ADN manual for information about how much data each input or output slice produces or consumes. Without RSNetWorx, there's no way to configure the more advanced features of the Point I/O, but this will get you operating. |


