iec61850 0.6.0

IEC 61850 client for Python, backed by rust_61850 (Rust core).

iec61850

Async-first, type-hinted IEC 61850 client for Python.

Features

• TCP connect / disconnect with timeout
• Typed scalar read / write: bool, int32, int64, uint32, float, float64, string, timestamp (decoded to datetime), quality (decoded to a Quality dataclass)
• Directory queries: get_server_directory, get_logical_device_directory, get_logical_node_directory(AcsiClass), get_data_directory
• Dataset admin: create_data_set, delete_data_set
• URCB / BRCB reporting: get_rcb_values, set_rcb_values, install_report_handler, poll_reports, background ReportDispatcher
• Control: select, select_with_value, operate, cancel across the four IEC 61850 control models (direct-normal / direct-enhanced / sbo-normal / sbo-enhanced)
• Typed exception hierarchy: IedError, IedConnectionError, IedTimeoutError, IedDataAccessError, IedServiceError, IedControlError

Install

pip install iec61850

Requires Python 3.11+. Wheels are published for Windows x86_64 and Linux x86_64 (manylinux 2014).

Quick start

import asyncio
import iec61850

async def main():
    conn = await iec61850.IedConnection.connect("127.0.0.1:102", timeout_ms=5000)
    try:
        status = await conn.read_int32("simpleIOGenericIO/LLN0.Mod.stVal", iec61850.FC.ST)
        vendor = await conn.read_string("simpleIOGenericIO/LLN0.NamPlt.vendor", iec61850.FC.DC)
        quality = await conn.read_quality("simpleIOGenericIO/GGIO1.Ind1.q", iec61850.FC.ST)
        print(status, vendor, quality.validity)
    finally:
        await conn.disconnect()

asyncio.run(main())

Reporting

def on_report(report: iec61850.ClientReport) -> None:
    print(report.rcb_reference, len(report.entries))

rcb = await conn.get_rcb_values("simpleIOGenericIO/LLN0$RP$urcb01")
rcb.resv = True
rcb.rpt_ena = True
await conn.set_rcb_values(rcb, iec61850.RcbWriteMask.fields("resv", "rpt_ena"))
await conn.install_report_handler(rcb.object_reference, on_report)

dispatcher = conn.spawn_report_dispatcher(interval_ms=100)
try:
    await asyncio.sleep(10)
finally:
    await dispatcher.aclose()

Control

spc = conn.create_control_object(
    "IED1LD0/GGIO1.SPCSO1",
    iec61850.ControlModel.SBO_ENHANCED,
)
spc.set_origin(iec61850.OriginValue(or_cat=3, or_ident=b"py-client"))

if (await spc.select_with_value(True)).success:
    outcome = await spc.operate(True)
    if not outcome.success:
        print("operate failed:", outcome.add_cause)

Error handling

try:
    conn = await iec61850.IedConnection.connect("10.0.0.1:102", timeout_ms=2000)
except iec61850.IedTimeoutError:
    ...   # connection timed out
except iec61850.IedConnectionError:
    ...   # TCP / OSI stack failure
except iec61850.IedError:
    ...   # catch-all base for any IEC 61850 error

License

Apache-2.0