Test Links In A Network - Loopback Cluster; Test Links Between Adjacent Devices - Digi XLR PRO User Manual

Advanced application features
The device that sends a remote command does not receive a remote command response frame if:
1. It could not reach the destination device.
2. You set the frame ID to 0 in the remote command request.

Test links in a network - loopback cluster

To measure the performance of a network, you can send unicast data through the network from one
device to another to determine the success rate of several transmissions. To simplify link testing, the
devices support a Loopback cluster ID (0x12) on the data endpoint (0xE8). The cluster ID on the data
endpoint sends any data transmitted to it back to the sender.
The following figure demonstrates how you can use the Loopback cluster ID and data endpoint to
measure the link quality in a mesh network.
The configuration steps for sending data to the loopback cluster ID depend on what mode the device
is in. For details on setting the mode, see
the device's mode.
Transparent operating mode configuration (AP = 0)
To send data to the loopback cluster ID on the data endpoint of a remote device:
1. Set the CI command to 0x12.
2. Set the DH and DL commands to the address of the remote device.
After exiting Command mode, the device transmits any serial characters it received to the remote
device, which returns those characters to the sending device.
API operating mode configuration (AP = 1 or AP = 2)
Send an Explicit Addressing Command frame - 0x11
source and destination endpoint.
The remote device echoes back the data packets it receives to the sending device.

Test links between adjacent devices

It often helps to test the quality of a link between two adjacent modules in a network. You can use the
Test Link Request Cluster ID to send a number of test packets between any two devices in a network.
To clarify the example, we refer to "device A" and "device B" in this section.
To request that device B perform a link test against device A:
1. Use device A in API mode (AP = 1) to send an Explicit Addressing Command (0x11) frame to
device B.
XLR PRO Radio Frequency (RF) Module User Guide
AP (API Mode). The following sections list the steps based on
using 0x12 as the cluster ID and 0xE8 as both the
Work with networked devices
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