Q: Why can’t I configure FTP, HTTP and MQTT together on an ML-x17?
A: There are limitations on the number of output drivers that can be used simultaneously.
This limit is three for an ML-x17.
With an ML-x17 some drivers are mutually exclusive, you can’t have both EMAIL and MQTT or TCP and HTTP.
FTP is always available, the limitation is a combination of two extra output drivers.
With an ML-525 you can make any combination of output drivers and have multiple the same ones, e.g. multiple MQTT drivers.
C: Firmware Driver limitations. (See: Data Logger Manual).