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Clarification of AO setting (API Output Mode)

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Could I ask for some more detail on AO mode bit settings please?

According to the documentation:

Bit 0 - Output in Native/Explicit API format
Bit 1 - Supported ZDO request pass-through
Bit 2 - Unsupported ZDO request pass-through
Bit 3 - Binding request pass-through
Bit 4 - Echo received supported ZDO requests out the serial port
Bit 5 - Suppress all ZDO messages from being sent out the serial port and disable pass-through

So I'd like to know:
- What is "supported" vs "unsupported" ZDO request? Is it that certain ZDP clusters are not supported? Or would a Simple_Descriptor_request (Cluster Id 0x0004) for an Endpoint other than E6 or E8 be considered as "unsupported".
- Is there another type of Zigbee message beyond "supported" and "unsupported" request? For example, I can see Node_Descriptor_responses (Cluster Id 0x8002) whether or not Bit 1/2 are set.
- Does pass-through strictly mean that the Xbee's ZDO takes no notice of it?

I'm looking at developing a simple ZHA device, so my understanding is that I need to implement the ZHA profile on one or more custom endpoints. So since the Xbee's ZDO only knows about E6 and E8 endpoints, do I need to turn on bit 1 (Supported ZDO pass-thru) and, in my host program, respond to the Active_EP_request (0x0005) by supplying my endpoint list, and respond to the Simple_Desc_request (0x0004) by supplying the profile,clusters,etc for each of my endpoints?

Having turned on bit 1 (Supported ZDO pass-thru) it means I'll also need to handle any other ZDP commands that the Xbee would have handled automatically. Is that correct? So I'm thinking of the other boilerplate stuff like IEEE_addr_req, NWK_addr_req, Node_desc, etc, would need to be explicitly handled. At least until, I turn bit 1 off again.

I know there's a few Xbee libraries around, but I'm just thinking through what needs to be implemented and what I can assume the module can carry on doing for me.
asked Jul 23 in XBee3 ZigBee by eulerlagrange New to the Community (0 points)

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1 Answer

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Supported vs not supported references the Digi application directly on the XBee product.

Yes, pass thru means just that. The xbee app ignores the ZDO request and passes it out the UART for an external application to process.

You would want bits 2 and 3
answered Jul 23 by mvut Veteran of the Digi Community (12,786 points)
That answer invites a homologous question, which is:

- what is a cluster that "references the Digi application directly on the XBee product" ?

There's few dozen clusters that are specified by ZigBee as part of the ZDP; isn't there _any_ documentation on how the XBee's ZDO handles these individually and whether they fall into the supported/unsupported/other category?

I'm trying to find this out asynchronously to waiting for an answer, by experimenting with firing various clusters at my XBee, but it would be good to get this more on a manufacturer's spec basis, so we can do grown up stuff, like change management, QA, ..