Search found 3 matches

by manas_frinso
Thu May 16, 2024 12:47 pm
Forum: ESP-IDF
Topic: Read multiple registers in modbus RTU
Replies: 1
Views: 995

Read multiple registers in modbus RTU

I am reading 4 registers in Modbus and am successful in receiving the values but I am only being able to print the first 2 register values Please help. #include "modbus_master.h" static const char *TAG = "MASTER_TEST"; float flow_valu = 0; // Enumeration of modbus device addresses accessed by master...
by manas_frinso
Thu May 16, 2024 12:02 pm
Forum: ESP-IDF
Topic: read multiple registers in modbus RTU
Replies: 1
Views: 943

read multiple registers in modbus RTU

I want to read 4 register values together , I am successful in getting a response. But I am only able to read the first 2 register values. This is how I have defined my values { CID_INP_DATA_0, STR("active_energy"), STR(" "), MB_DEVICE_ADDR1, MB_PARAM_INPUT, 01127, 4, INPUT_OFFSET(data_block1), PARA...
by manas_frinso
Tue Apr 16, 2024 12:14 pm
Forum: ESP-IDF
Topic: Modbus Cid error
Replies: 1
Views: 884

Modbus Cid error

Hi, I am working with ESP 32 and 5.1.2 IDF , I am Communicating with 3 separate Mod slaves in RTU mode. I am successfully reading first 7 values CID 0 to 6 and CID 8. But I am having trouble reading CID 7 & 9. I (25838) MASTER_TEST: Characteristic #0 value = 40F3DB19 read successful. I (26288) MASTE...