The loopback mode (store and forward) repeater will work with all versions of firmware on all Digi radio modems that supports intranet/local networking (i.e. not on Cellular or WiFi modules). It is important to keep in mind that the Data In (DI) buffer size on our modules might change to some degree with firmware or hardware versions. This can affect the amount of data a repeater is able to store and forward.
Following are the approximate buffer sizes:
| Modem |
Buffer size |
| XBee3 802.15.4 |
304 Bytes (TX Buffer)
960 Bytes (RX Buffer)
|
| XBee3 DigiMesh |
137 Bytes (TX Buffer)
292 Bytes (RX Buffer)
|
| XBee3 Zigbee |
1056 Bytes(TX Buffer)
768 Bytes (RX Buffer)
|
| 900HP/ SX900/ SX868 |
>255 bytes (Dynamic Buffer size) |
| 9XTend vB / XTC (XTend Compatible) |
2.1 kB |
| XBee S2C series (S2C/ S2C Pro/ S2C Pro NG) |
255 bytes |
| XBee Series 1 (S1/S1 Pro) |
202 bytes |
For the Loop Back adapter to work properly with RS-232, only pins 2 (RXD) and 3 (TXD) need to be shorted together. You may use a bent paper clip in place of the Loop Back adapter.
Relevant Files
Last updated:
Aug 23, 2017