zapf 0.4.15

Client library for the PILS specification

This is a client library for the PILS PLC interface specification, found here: https://forge.frm2.tum.de/public/doc/plc/master/html/

A minimal example of usage:

import logging
import zapf.scan

# Connection via different protocols is abstracted via URIs.
# Here we connect via Modbus/TCP using slave number 0.
URI = 'modbus://my.plc.host:502/0'

# The Scanner allows reading the PLC's "indexer" which provides
# all metadata about the PLC and its devices.
scanner = zapf.scan.Scanner(URI, logging.root)
plc_data = scanner.get_plc_data()
print('connected to PLC:', plc_data.plc_name)

# For each found device, this will create a client object and
# read the most basic property - the current value.
for dev in scanner.scan_devices():
    print('got a device:', dev)
    print('device value:', device.read_value())