From 76a238912b2b474c928e5ce0bceba1e05b15ebdd Mon Sep 17 00:00:00 2001 From: Martin <25747549+martgras@users.noreply.github.com> Date: Wed, 19 Jan 2022 21:19:24 +0100 Subject: [PATCH] [modbus_controller] fix incorrect start address for number write (#3073) --- .../components/modbus_controller/number/modbus_number.cpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/esphome/components/modbus_controller/number/modbus_number.cpp b/esphome/components/modbus_controller/number/modbus_number.cpp index 5e977f5df4..a0e990d272 100644 --- a/esphome/components/modbus_controller/number/modbus_number.cpp +++ b/esphome/components/modbus_controller/number/modbus_number.cpp @@ -57,9 +57,11 @@ void ModbusNumber::control(float value) { // Create and send the write command ModbusCommandItem write_cmd; if (this->register_count == 1 && !this->use_write_multiple_) { - write_cmd = ModbusCommandItem::create_write_single_command(parent_, this->start_address + this->offset, data[0]); + // since offset is in bytes and a register is 16 bits we get the start by adding offset/2 + write_cmd = + ModbusCommandItem::create_write_single_command(parent_, this->start_address + this->offset / 2, data[0]); } else { - write_cmd = ModbusCommandItem::create_write_multiple_command(parent_, this->start_address + this->offset, + write_cmd = ModbusCommandItem::create_write_multiple_command(parent_, this->start_address + this->offset / 2, this->register_count, data); } // publish new value