Siemens SENTRON PAC

A Python library for reading Siemens SENTRON PAC -series measuring devices.

Installation

pip install git+https://github.com/kipe/siemens-pac.git

Usage

To read PACx200 -devices through Modbus TCP/IP:

from siemens.pac import PACx200
p = PACx200('192.168.0.80')
p.read()  # Reads all values from PAC
# Print whole PAC as dictionary, with NaN values replaced with 0 (useful for JSON dumping).
print(p.as_dict(replace_nan=True))

Issues

• PAC3100 is supported only in theory, as I haven't got a device to test on. Might or might not work.
• According to tests done on PAC3200, if only one (might be also only two?) phase is connected, phase specific powers are reported as NaN.

However, total power, accessible via PACx200.power, is reported correctly. In this case, Phase.voltage and Phase.current are used to calculate Power.apparent. Power.active and Power.reactive are left as NaN, to indicate invalid input.