Unwanted tags in modbus input setup (telegraf)

Telegraf
1

Hi All,

I was able to successfully get a telegraph setup for reading an energy meter via Modbus RTU up and running.

Here is the Modbus chapter of the *.conf file:

[[inputs.modbus]]
  name = "energy_meter_test"
  slave_id = 10
  timeout = "5s"
  controller = "file:///dev/ttyUSB0"
  baud_rate = 38400
  data_bits = 8
  parity = "N"
  stop_bits = 1
  transmission_mode = "RTU"
  configuration_type = "register"
  input_registers = [
    { measurement = "energy",   name = "voltage_V",                         byte_order = "ABCD",   data_type = "FIXED",   scale=0.001,   address = [256,257]},
    { measurement = "energy",   name = "current_A",                         byte_order = "ABCD",   data_type = "FIXED",   scale=0.001,   address = [258,259]},
    { measurement = "energy",   name = "active_power_W",                    byte_order = "ABCD",   data_type = "FIXED",   scale=1.0,     address = [260,261]},
  ]

What I get as line protocol output looks like this:

energy,host=modbusRTU-test-raspi,name=energy_meter_test,slave_id=10,type=input_register voltage_V=227.73000000000002,current_A=0.914,active_power_W=148 1705271172000000000

What annoys me is the tag type=input_register in the output line. Where does it come from and how can I get rid of it from the output data stream?

I would be grateful for any advice.

conne914

2

The tag is set based on the type of configuration to read.

If you don’t want it, then see the tagexclude config option.

3

Hi jpowers,

thanks a lot! I just had the chance to try it out today. The tagexclude option works for me.

:+1:

conne914