sxip_drivers.py

Sxip class

class sxip.Sxip(modbus_link: Modbus = None, modbus_addr: int = 1)

Bases: object

Allows to instantiate a SxIP device, then provides methods to access it.

Parameters:

modbus_link – modbus_link objet instantiated from the modbus module or None (default)
modbus_addr – device’s Modbus slave address (0 to 247). 0 is broadcast.

property modbus_addr: Get or set the Modbus address of the device. int: device’s Modbus slave address (0 to 247). 0 is broadcast.

read_registers(reg_addr: int, nb_reg: int = 1, **kwargs) → list

Read a register from the SxIP device.

Parameters:

reg_addr – Starting address (0x0000 to 0xFFFF).
nb_reg – Quantity of registers to read (1 to 125).
kwargs – Arbitrary keyword arguments.

Returns list(int):

Registers’ content.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

write_register(reg_addr: int, value: int, **kwargs) → None

Write a register to the SxIP device.

Parameters:

reg_addr – Starting address (0x0000 to 0xFFFF).
value – Value to write (0x0000 to 0xFFFF).

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

write_registers(reg_addr: int, values: list, **kwargs) → None

Write multiple registers to the SxIP device.

Parameters:

reg_addr – Starting address (0x0000 to 0xFFFF).
values – List of words (0x0000 to 0xFFFF) to write (max 123 words).

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

write_coil(coil_addr: int, state: str, **kwargs) → None

Write a coil to the SxIP device.

Parameters:

reg_addr – Coil’s address (0x0000 to 0xFFFF).
state – state to write (‘ON’ or ‘OFF’).

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

reset() → None

Reset the SxIP device (software reset).

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_init_done() → None

Set the init done flag of the SxIP device.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

clear_init_done() → None

Clear the init done flag of the SxIP device.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

clear() → None

Clear error flags of the SxIP device.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

flash() → None

Trigger a flash from the SxIP device.

Software trigger is for test purpose. Trigger delay is long and inconstant.

save_settings() → None

Save actual settings in the SxIP device memory.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

clear_lamp_count() → None: Clear the SxIP device lamp count (At lamp replacement).

get_state() → dict

Read device’s state.

Returns {str:

bool}: A dictinonay of flags’ names and states state values could be 0 or 1:

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_config_inputs() → int

Read device’s configuration inputs’ value (1..16).

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_io_state(output: str = 'binary') → dict

Read device’s inputs and outputs’ state.

Parameters:

output – ‘binary’ or ‘dict’

Returns flag byte:

if output is selected to ‘binary’:

bit	6	5	4	3	2	1	0
IO	ISO_OUT	TTL_IO	DRY_INPUT	IN4	IN3	IN2	IN1

DRY_INPUT and ISO_OUTPUT are 1 when closed

Returns dict:

if output is selected to ‘dict’: A dictionnay with couples of IOnames and states

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_serial() → int

Read device’s serial number.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_date() → tuple

Read device’s manufacturing date.

Returns list(int):

year, week

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_hwrev() → str

Read device’s hardware revision.

Returns str:

Major.minor (A.00)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_modbus_address() → int

Read device’s modbus address

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_energy_level() → int

Read device’s current energy level

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_ftime() → int

Read device’s current flash time (µs)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_input_voltage() → int

Return device’s input voltage (V)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_temperature() → int

Read device’s temperature (°C)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_last_flash_energy() → int

Read device’s last flash energy (J)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_flash_error_count() → int

Read device’s error count

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_flash_healt() → int

Read device’s health value

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_minmax_temp() → tuple

Read device’s minimum and maximum recorded temperatures

Returns:: int: minimum temperature (°C) int: maximum_temperature (°C)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_start_count()

Read device’s start count

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_time_count()

Read device’s time counter since last power-up

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_total_time_count()

Read slave device’s total power-up time count

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_flash_count()

Read device’s flash counter since last power-up

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_total_flash_count()

Read device’s total flash counter

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

get_lamp_count()

Read device’s lamp counter

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_voltage(voltage: int) → None

Set the regulation voltage (V)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_ftime(ftime: int) → None

Set the flash time (µs)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_mode(mode: str = 'ftime') → None

Set the device operating mode.

Parameters:

mode –

ftime = Fixed ftime.

burst = Ftime is according to the ftime table. Allows successive flashes without recharge.

energy_reg = Ftime is according to the energy level table. Flash energy is regulated.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_fan(mode: str = 'temp_regulated', level: int = 100) → None

Set the fan’s operating parameters.

Parameters:

mode –
fixed level = Fan speed is fixed to the level.

temp_regulated = Fan speed is regulated according to both power and temperature with minium speed = level.

power_regulated = Fan speed is regulated according to power with is the minium speed = level.
level – [0..100] %

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_health_param(missed_flash_weight: int, health_treshold: int) → None

Set flash health supervision parameters.

Parameters:

missed_flash_weight – When a flash is missed, health value is increased by this value When a flash is succeded, health value is decreased by 1
health_threshold – Health value that triggers an error.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_reset_on_failure(delay: int) → None

Set the reset on failure delay

Parameters:

delay – Delay from failure detection to reset. If 0, SxIP will not reset (remains locked in failure)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_modbus_addr(address: int) → None

Set the modbus address.

Parameters:

address – Modbus address [0..247]

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_energy_levels(prim_energy_level: int, alt_energy_level: int = 0) → None

Set the energy levels

Parameters:

prim_energy_level – Energy level [0..16]
alt_energy_level – Energy level [0..16]

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_trigger_delay(delay: int)

Set delay from trigger input edge to flash triggering.

Parameters:

delay – delay from trigger input edge to flash triggering (µs)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_sync_shift(slave: int, time_shift: int) → None

Set synchronisation signal relatively to the flash triggering.

Parameters:

time_shift – time shift (µs)
alt_energy_level – Energy level [0..16]

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_sync_pulse_time(duration: int) → None

Set synchronisation pulse duration

Parameters:

duration – synchronisation pulse width (µs)

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_io5(polarity: str = 'high', buffer: str = 'schmitt', mode: str = 'not_used') → None

Configure IO5 (Dry input) functionnality.

Parameters:

polarity –
low = active low, trigger on falling edges.

high = active high, trigger on rising edges.
buffer –
schmitt = optimized for 12V levels (Levels are 2.0V & 8.0V).

TTL = 5V compatible (levels are 1.6V & 4.0V).
mode –
not_used = Has no effect.

flash_trigger = Trigger the flash.

alt_energy_selector = Turns to alternate energy level.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_io6(polarity: str = 'high', buffer: str = 'schmitt', mode: str = 'not_used') → None

Configure IO6 (TTL IO) functionnality.

Parameters:

polarity –
low = active low, trigger on falling edges.

high = active high, trigger on rising edges.
buffer –
schmitt = Levels are 1.0V and 4.0V).

TTL = 3.3V compatible (levels are 0.8V and 2.0V).
mode –
not_used = Has no effect.

flash_trigger = Trigger the flash.

alt_energy_selector = Turns to alternate energy level.

low = Force output to low state.

high = Force output to high state.

sync_output = Output the synchronisation signal.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

set_io7(polarity: str = 'high', mode: str = 'not_used') → None

Configure IO7 (Isolated output) functionnality.

Parameters:

polarity –
low = active low.

high = active high.
mode –
not_used = Has no effect.

open = Force output to open state.

closed = Force output to closed state.

sync_output = Output the synchronisation signal.

Raises:

ValueError – Arguments are out of range.
ModbusError – Modbus protocol error or the device answers with an exception.
serial.SerialException – Serial port is missing, busy, or can not be configured.

Exceptions

Exceptions inherited from phox-modbus

class modbus.ModbusError: Exception raised in case of Modbus communication error.

class modbus.SlaveExceptionError: Exceptions that the Modbus device reports.

class modbus.IllegalRequestError

The slave has received an illegal request.

Can be “Illegal function”, “Illegal address” or “Illegal data value”

class modbus.MasterReportedError: Exceptions that are detected by the master.

class modbus.NoResponseError: No response from the slave.

class modbus.InvalidResponseError: The response does not fulfill the Modbus standad.

Exceptions inherited from pyserial

class serial.SerialException: Base class for serial port related exceptions.

class serial.PortNotOpenError: Port is not open

class serial.SerialTimeoutException: Write timeouts give an exception