4 byte dressing is supported by the T command if ADDRESS_MODE=8. Note however that the module reply with prompt (>) for each byte you send. We can see that this is confusing, and we will update the documentation regarding how to use the T command when ADDRESS_MODE=8. Please let us know if this help you out.
Last Update: August 8, 2017
January 25, 2017 1212 RC232 Q&A