WeatherDisplay

Data display application for Weather Station The weather station controller implements a Modbus RTU Slave protocol over RS485 port. The config parameters for the port are available on the CLI port.

Modbus object types

All modbus RTU object type with standard addresses are implemented : Coils, Discrete Inputs, Input registers, Holding registers.

Coils

Acces level Read/Write, Size 1 bit

Device function	Modbus Address	Description
COIL_START_CALIB_CMD	0x01	Write 1 to start calibration with the last values from the calibration registers
COIL_COUNT_RST	0x02	Write 1 to reset the pulse counter

Discrete Inputs

Access level Read Only, Size 1 bit

Device function	Register Address	Modbus Address	Description
DI_CALIB_PROGRESS	0x01	10001	Calibration in progress flag
DI_CALIB_DONE	0x01	10002	Calibration done flag
DI_CALIB_ERROR	0x01	10003	Calibration error flag
DI_EXT_SNS_ERROR	0x01	10004	External pressure sensor (BME280) error flag
DI_INT_SNS_ERROR	0x01	10005	Internal pressure sensor error flag
DI_ACC_ERROR	0x01	10006	Acceleration sensor error flag

Input registers

Access level Read Only, Size 16 bits

Device function	Register Address	Description	Measurement Unit
IR_4_20MA_IN_HI1	30001	4-20mA Input 1 high word of float
IR_4_20MA_IN_LO1	30002	4-20mA Input 1 low word of float
IR_4_20MA_IN_HI2	30003	4-20mA Input 2 high word of float
IR_4_20MA_IN_LO2	30004	4-20mA Input 2 low word of float
IR_0_5V_IN_HI	30005	0-5V Input high word
IR_0_5V_IN_LO	30006	0-5V Input low word
IR_RTD_HI	30007	Temperature of PT1000 RTD sensor high word	°C
IR_RTD_HI	30008	Temperature of PT1000 RTD sensor low word	°C
IR_PULSE_COUNTER	30009	Counter for digital inpiut
IR_PHOTO_HI	30010	Photo sensor high word
IR_PHOTO_LO	30011	Photo sensor low word
IR_INT_PRESS_HI	30012	Internal pressure sensor high word of float	Pa
IR_INT_PRESS_LO	30013	Internal pressure sensor low word of float	Pa
IR_INT_TEMP_HI	30014	Internal temperature sensor high word	°C
IR_INT_TEMP_LO	30015	Internal temperature sensor low word	°C
IR_PITCH_HI	30016	Inclination angle, pitch high word	°
IR_PITCH_LO	30017	Inclination angle, pitch low word	°
IR_ROLL_HI	30018	Inclination angle, roll high word	°
IR_ROLL_LO	30019	Inclination angle, roll low word	°
IR_EXT_PRESS_HI	30020	Ext BME280 pressure high word of float	Pa
IR_EXT_PRESS_LO	30021	Ext BME280 pressure low word of float	Pa
IR_EXT_TEMP_HI	30022	Ext BME280 temperature high word	°C
IR_EXT_TEMP_LO	30023	Ext BME280 temperature low word	°C
IR_EXT_HUM_HI	30024	Ext BME280 humidity high word	%
IR_EXT_HUM_LO	30025	Ext BME280 humidity low word	%
IR_PULSE_H	30026	Pulses per hour for rain sensor
IR_PULSE_24H	30027	Pulses per day for rain sensor
IR_0_100MV_IN_HI	30028	0-100mV Input high word
IR_0_100MV_IN_LO	30029	0-100mV Input low word
IR_FW_VERSION	30030	Firmware version

Holding registers

Access level Read/Write, Size 16 bits

Device function	Register Address	Modbus Address	Measurement Unit	Range	Comment
HR_CALIB_VALUE_HI	40001	0x00			Calibration value as a floating point number
HR_CALIB_VALUE_LO	40002	0x01			Calibration value as a floating point number
HR_CALIB_CH	40003	0x02			Calibration works only from command line
HR_BAUDRATE	40004	0x03	hz/100	12..9216
HR_ADDRESS	40005	0x04		1..254
HR_PARITY	40006	0x05		0..2	0=NONE; 1=EVEN; 2=ODD
HR_PARAM_RTD_SLOPE_HI	40007	0x06			RTD slope high word
HR_PARAM_RTD_SLOPE_LO	40008	0x07			RTD slope low word
HR_PARAM_RTD_INTERCEPT_HI	40009	0x08			RTD intercept high word
HR_PARAM_RTD_INTERCEPT_LO	40010	0x09			RTD intercept low word
HR_PARAM_VIN_SLOPE_HI	40011	0x0A			Voltage input slope high word
HR_PARAM_VIN_SLOPE_LO	40012	0x0B			Voltage input slope low word
HR_PARAM_VIN_INTERCEPT_HI	40013	0x0C			Voltage input intercept high word
HR_PARAM_VIN_INTERCEPT_LO	40014	0x0D			Voltage input intercept low word
HR_PARAM_CRT1_SLOPE_HI	40015	0x0E			Current 1 slope high word
HR_PARAM_CRT1_SLOPE_LO	40016	0x0F			Current 1 slope low word
HR_PARAM_CRT1_INTERCEPT_HI	40017	0x10			Current 1 intercept high word
HR_PARAM_CRT1_INTERCEPT_LO	40018	0x11			Current 1 intercept low word
HR_PARAM_CRT2_SLOPE_HI	40019	0x12			Current 2 slope high word
HR_PARAM_CRT2_SLOPE_LO	40020	0x13			Current 2 slope low word
HR_PARAM_CRT2_INTERCEPT_HI	40021	0x14			Current 2 intercept high word
HR_PARAM_CRT2_INTERCEPT_LO	40022	0x15			Current 2 intercept low word
HR_PARAM_PHOTO_SLOPE_HI	40023	0x16			Photo sensor slope high word
HR_PARAM_PHOTO_SLOPE_LO	40024	0x17			Photo sensor slope low word
HR_PARAM_PHOTO_INTERCEPT_HI	40025	0x18			Photo sensor intercept high word
HR_PARAM_PHOTO_INTERCEPT_LO	40026	0x19			Photo sensor intercept low word
HR_PARAM_BARO_SLOPE_HI	40027	0x1A			Barometric pressure slope high word
HR_PARAM_BARO_SLOPE_LO	40028	0x1B			Barometric pressure slope low word
HR_PARAM_BARO_INTERCEPT_HI	40029	0x1C			Barometric pressure intercept high word
HR_PARAM_BARO_INTERCEPT_LO	40030	0x1D			Barometric pressure intercept low word
HR_PARAM_ACC_X_1G_HI	40031	0x1E			Accelerometer X 1G calibration high word
HR_PARAM_ACC_X_1G_LO	40032	0x1F			Accelerometer X 1G calibration low word
HR_PARAM_ACC_X_OFFSET_HI	40033	0x20			Accelerometer X offset high word
HR_PARAM_ACC_X_OFFSET_LO	40034	0x21			Accelerometer X offset low word
HR_PARAM_ACC_Y_1G_HI	40035	0x22			Accelerometer Y 1G calibration high word
HR_PARAM_ACC_Y_1G_LO	40036	0x23			Accelerometer Y 1G calibration low word
HR_PARAM_ACC_Y_OFFSET_HI	40037	0x24			Accelerometer Y offset high word
HR_PARAM_ACC_Y_OFFSET_LO	40038	0x25			Accelerometer Y offset low word
HR_PARAM_ACC_Z_1G_HI	40039	0x26			Accelerometer Z 1G calibration high word
HR_PARAM_ACC_Z_1G_LO	40040	0x27			Accelerometer Z 1G calibration low word
HR_PARAM_ACC_Z_OFFSET_HI	40041	0x28			Accelerometer Z offset high word
HR_PARAM_ACC_Z_OFFSET_LO	40042	0x29			Accelerometer Z offset low word
HR_PARAM_PITCH_OFFSET_HI	40043	0x2A			Pitch angle offset high word
HR_PARAM_PITCH_OFFSET_LO	40044	0x2B			Pitch angle offset low word
HR_PARAM_ROLL_OFFSET_HI	40045	0x2C			Roll angle offset high word
HR_PARAM_ROLL_OFFSET_LO	40046	0x2D			Roll angle offset low word
HR_PARAM_MODBUS_BAUDRATE_HI	40047	0x2E			Modbus baudrate configuration high word
HR_PARAM_MODBUS_BAUDRATE_LO	40048	0x2F			Modbus baudrate configuration low word
HR_PARAM_MODBUS_SETTINGS_HI	40049	0x30			Modbus settings high word
HR_PARAM_MODBUS_SETTINGS_LO	40050	0x31			Modbus settings low word
HR_PARAM_VIN_RANGE_HI	40051	0x32			Voltage input range high word
HR_PARAM_VIN_RANGE_LO	40052	0x33			Voltage input range low word
HR_PARAM_MVIN_SLOPE_HI	40053	0x34			Millivolt input slope high word
HR_PARAM_MVIN_SLOPE_LO	40054	0x35			Millivolt input slope low word
HR_PARAM_MVIN_INTERCEPT_HI	40055	0x36			Millivolt input intercept high word
HR_PARAM_MVIN_INTERCEPT_LO	40056	0x37			Millivolt input intercept low word
HR_PARAM_RTD_LOW_LIMIT_HI	40057	0x38			RTD low limit high word
HR_PARAM_RTD_LOW_LIMIT_LO	40058	0x39			RTD low limit low word
HR_PARAM_RTD_HIGH_LIMIT_HI	40059	0x3A			RTD high limit high word
HR_PARAM_RTD_HIGH_LIMIT_LO	40060	0x3B			RTD high limit low word
HR_PARAM_VIN_LOW_LIMIT_HI	40061	0x3C			Voltage input low limit high word
HR_PARAM_VIN_LOW_LIMIT_LO	40062	0x3D			Voltage input low limit low word
HR_PARAM_VIN_HIGH_LIMIT_HI	40063	0x3E			Voltage input high limit high word
HR_PARAM_VIN_HIGH_LIMIT_LO	40064	0x3F			Voltage input high limit low word
HR_PARAM_CRT1_LOW_LIMIT_HI	40065	0x40			Current 1 low limit high word
HR_PARAM_CRT1_LOW_LIMIT_LO	40066	0x41			Current 1 low limit low word
HR_PARAM_CRT1_HIGH_LIMIT_HI	40067	0x42			Current 1 high limit high word
HR_PARAM_CRT1_HIGH_LIMIT_LO	40068	0x43			Current 1 high limit low word
HR_PARAM_CRT2_LOW_LIMIT_HI	40069	0x44			Current 2 low limit high word
HR_PARAM_CRT2_LOW_LIMIT_LO	40070	0x45			Current 2 low limit low word
HR_PARAM_CRT2_HIGH_LIMIT_HI	40071	0x46			Current 2 high limit high word
HR_PARAM_CRT2_HIGH_LIMIT_LO	40072	0x47			Current 2 high limit low word
HR_PARAM_PHOTO_LOW_LIMIT_HI	40073	0x48			Photo sensor low limit high word
HR_PARAM_PHOTO_LOW_LIMIT_LO	40074	0x49			Photo sensor low limit low word
HR_PARAM_PHOTO_HIGH_LIMIT_HI	40075	0x4A			Photo sensor high limit high word
HR_PARAM_PHOTO_HIGH_LIMIT_LO	40076	0x4B			Photo sensor high limit low word
HR_PARAM_BARO_LOW_LIMIT_HI	40077	0x4C			Barometric pressure low limit high word
HR_PARAM_BARO_LOW_LIMIT_LO	40078	0x4D			Barometric pressure low limit low word
HR_PARAM_BARO_HIGH_LIMIT_HI	40079	0x4E			Barometric pressure high limit high word
HR_PARAM_BARO_HIGH_LIMIT_LO	40080	0x4F			Barometric pressure high limit low word
HR_PARAM_MVIN_LOW_LIMIT_HI	40081	0x50			Millivolt input low limit high word
HR_PARAM_MVIN_LOW_LIMIT_LO	40082	0x51			Millivolt input low limit low word
HR_PARAM_MVIN_HIGH_LIMIT_HI	40083	0x52			Millivolt input high limit high word
HR_PARAM_MVIN_HIGH_LIMIT_LO	40084	0x53			Millivolt input high limit low word
HR_SPARE	40085	0x54			Spare register

Function codes implemented

• Read Coils (0x01)
• Read Discrete Inputs (0x02)
• Read Holding Registers (0x03)
• Read Input Registers (0x04)
• Write Single Coil (0x05)
• Write Single Register (0x06)
• Write Multiple Coils (0x0f)
• Write Multiple registers (0x10)

Notes: The calibration can be done and monitored only from CLI, so the variables calibration related are not implemented