def device(config):
# Configuration parameters:
#
# timeout seconds to wait for a response, default: 1
# retries number of retries, default: 3
# unit modbus address, default: 1
#
# For Modbus TCP:
# host ip or hostname
# port modbus tcp port
#
# For Modbus RTU:
# device serial device, e.g. /dev/ttyUSB0
# stopbits number of stop bits
# parity parity setting, N, E or O
# baud baud rate
timeout = config.getint("timeout", fallback=1)
retries = config.getint("retries", fallback=3)
unit = config.getint("src_address", fallback=1)
host = config.get("host", fallback=False)
port = config.getint("port", fallback=False)
device = config.get("device", fallback=False)
if device:
stopbits = config.getint("stopbits", fallback=1)
parity = config.get("parity", fallback="N")
baud = config.getint("baud", fallback=2400)
if (parity
and parity.upper() in ["N", "E", "O"]):
parity = parity.upper()
else:
parity = False
return sdm_modbus.SDM120(
device=device,
stopbits=stopbits,
parity=parity,
baud=baud,
timeout=timeout,
retries=retries,
unit=unit
)
else:
return sdm_modbus.SDM120(
host=host,
port=port,
timeout=timeout,
retries=retries,
unit=unit
)
def __init__(self, name, device="/dev/modbus", baud=2400):
"""Initialize Interfacer
"""
# Initialization
super(EmonHubSDM120Interfacer, self).__init__(name)
# This line will stop the default values printing to logfile at start-up
# self._settings.update(self._defaults)
# Interfacer specific settings
self._SDM120_settings = {'read_interval': 10.0, 'nodename': 'sdm120'}
self.next_interval = True
# Only load module if it is installed
try:
import sdm_modbus
self._log.info("Connecting to SDM120 device=" + str(device) +
" baud=" + str(baud))
self._sdm = sdm_modbus.SDM120(device="/dev/modbus", baud=2400)
self._sdm_registers = sdm_modbus.registerType.INPUT
except ModuleNotFoundError as err:
self._log.error(err)
self._sdm = False
def device(
host=False, port=False,
device=False, stopbits=False, parity=False, baud=False,
timeout=False, retries=False, unit=False,
extended=False
):
if device:
return sdm_modbus.SDM120(
device=device,
stopbits=stopbits,
parity=parity,
baud=baud,
timeout=timeout,
unit=unit
)
else:
return sdm_modbus.SDM120(
host=host,
port=port,
timeout=timeout,
unit=unit
)
if __name__ == "__main__":
argparser = argparse.ArgumentParser()
argparser.add_argument("device", type=str, help="Modbus device")
argparser.add_argument("--stopbits", type=int, default=False, help="Stop bits")
argparser.add_argument("--parity", type=str, default=False, choices=["N", "E", "O"], help="Parity")
argparser.add_argument("--baud", type=int, default=False, help="Baud rate")
argparser.add_argument("--timeout", type=int, default=1, help="Connection timeout")
argparser.add_argument("--unit", type=int, default=1, help="Modbus unit")
argparser.add_argument("--json", action="store_true", default=False, help="Output as JSON")
args = argparser.parse_args()
meter = sdm_modbus.SDM120(
device=args.device,
stopbits=args.stopbits,
parity=args.parity,
baud=args.baud,
timeout=args.timeout,
unit=args.unit
)
if args.json:
print(json.dumps(meter.read_all(), indent=4))
else:
print(f"{meter}:")
print("\nInput Registers:")
for k, v in meter.read_all(sdm_modbus.registerType.INPUT).items():
address, length, rtype, dtype, vtype, label, fmt, batch = meter.registers[k]
if type(fmt) is list or type(fmt) is dict:
print(f"\t{label}: {fmt[str(v)]}")
argparser.add_argument("--timeout",
type=int,
default=1,
help="Connection timeout")
argparser.add_argument("--unit",
type=int,
default=1,
help="Modbus device address")
argparser.add_argument("--json",
action="store_true",
default=False,
help="Output as JSON")
args = argparser.parse_args()
meter = sdm_modbus.SDM120(host=args.host,
port=args.port,
timeout=args.timeout,
unit=args.unit)
if args.json:
print(json.dumps(meter.read_all(), indent=4))
else:
print(f"{meter}:")
print("\nInput Registers:")
for k, v in meter.read_all(sdm_modbus.registerType.INPUT).items():
address, length, rtype, dtype, vtype, label, fmt, batch = meter.registers[
k]
if type(fmt) is list or type(fmt) is dict:
print(f"\t{label}: {fmt[str(v)]}")
elif vtype is float: