inputs.modbus plugin supports custom maxBatchSize

Telegraf
1

Hello, I found that while using the inputs.modbus plugin, the maximum number of single requests for coils and discrete is 2000, and the maximum number of single requests for holding registers and input registers is 125. However, the device does not support this. I would like to customize the maximum read limit. How can I set it? Can you help me develop it if it’s not supported? Thank you

2025-04-24T08:06:51Z I! [inputs.modbus::inputs@modbus@3OSIS9jSTq] Got 5 request(s) touching 501 holding registers for 498 fields (slave 1) on device “3OSIS9jSTq”
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #1: @0 with length 125
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #2: @125 with length 125
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #3: @250 with length 125
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #4: @375 with length 124
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #5: @499 with length 2
2025-04-24T08:06:51Z I! [inputs.modbus::inputs@modbus@3OSIS9jSTq] Got 5 request(s) touching 501 inputs registers for 498 fields (slave 1) on device “3OSIS9jSTq”
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #1: @0 with length 125
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #2: @125 with length 125
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #3: @250 with length 125
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #4: @375 with length 124
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #5: @499 with length 2
2025-04-24T08:06:51Z I! [inputs.modbus::inputs@modbus@3OSIS9jSTq] Got 3 request(s) touching 5000 discrete registers for 5000 fields (slave 1) on device “3OSIS9jSTq”
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #1: @0 with length 2000
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #2: @2000 with length 2000
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #3: @4000 with length 1000
2025-04-24T08:06:51Z I! [inputs.modbus::inputs@modbus@3OSIS9jSTq] Got 3 request(s) touching 5000 coil registers for 5000 fields (slave 1) on device “3OSIS9jSTq”
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #1: @0 with length 2000
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #2: @2000 with length 2000
2025-04-24T08:06:51Z D! [inputs.modbus::inputs@modbus@3OSIS9jSTq] #3: @4000 with length 1000

2

I’m not sure @skartikey do you know? Thank you!