fins-driver 0.3.1

Python FINS driver for Omron PLC

fins-driver

FINS (Factory Interface Network Service) Python driver for Omron PLC.

Installation

Install the latest version from PyPI by typing this command:

pip install -U fins-driver

Usage

Below is an example on how to use the client class.

from fins import FinsClient

client = FinsClient(host='192.168.250.1', port=9600)
response = client.memory_area_read('D0')
print(response.data)
client.close()

Memory Area Read

.memory_area_read(address: str | bytes, num_items: int = 1) -> Response[bytes]

Examples:

Read DM area at word 0.

response = client.memory_area_read('D0')

Read CIO area at word 100 and bit 01.

response = client.memory_area_read('CIO100.01')

Memory Area Write

.memory_area_write(address: str | bytes, data: bytes, num_items: int = 1) -> Response[bytes]

Examples:

Write to CIO area at word 100. It will turn on CIO100.00 and CIO100.01. Hex value \x00\x03 is translated to 0000 0000 0000 0011 in binary.

response = client.memory_area_write("CIO100", b"\x00\x03")

Write to CIO area at word 100 and bit 01. We only need to provide 1 bytes data to write bit status. Hex value \x01 is translated to ON, while \x00 is translated to OFF.

response = client.memory_area_write("CIO100.01", b"\x01")

Memory Area Fill

.memory_area_fill(address: str | bytes, data: bytes, num_items: int = 1) -> Response[bytes]

Examples:

Fill DM area word with \x00\x03.

response = client.memory_area_fill("D0", b"\x00\x03")

Multiple Memory Area Read

.multiple_memory_area_read(*addresses: str | bytes) -> Response[List[bytes]]

Examples:

Read multiple memory area words.

response = client.multiple_memory_area_read("D0", "D1")

Read multiple memory area bits.

response = client.multiple_memory_area_read("CIO100.00", "CIO100.01")

Memory Area Transfer

.memory_area_transfer(source_address: str | bytes, dest_address: str | bytes, num_items: int = 1) -> Response[bytes]

Examples:

Transfer memory area word from D0 to D1.

response = client.memory_area_transfer("D0", "D1")

Run

.run(mode: debug | monitor | run = "monitor", program_number: bytes = b"\xff\xff") -> Response[bytes]

Examples:

Change PLC to run in monitor mode.

response = client.run("monitor")

Stop

.stop() -> Response[bytes]

Examples:

Stop PLC device.

response = client.stop()

Forced Set/Reset

.forced_set_reset(*specs: SetResetSpec) -> Response[bytes]

Examples:

Force-set ON the CIO0.01.

from fins import SetResetSpecCode, SetResetSpec

response = client.forced_set_reset(SetResetSpec(SetResetSpecCode.FORCE_SET, "CIO0.01"))

Forced Set/Reset Cancel

.forced_set_reset_cancel() -> Response[bytes]

Examples:

Cancel all bits that have been forced ON or OFF.

response = client.forced_set_reset_cancel()

Memory Areas

Below is supported memory areas prefix.

Prefix	Description
CIO	Core IO area
W	Work area
H	Holding area
A	Auxiliary area
D	Data Memory area

For the core IO area, you can omit the prefix. For example, address 100.01 is the same as CIO100.01.

Response Object

Property/Method	Type	Description
data	T	Response data. Refer to each command to see data type.
code	bytes	Response code, primarily \x00\x00 if it's OK.
status_text	str	Textual description of the response code.
ok	bool	True if request was OK (Normal completion).
raw_data	bytes	Original unparsed response data.
raw	bytes	The overall raw content of response.
header	Header	Response header data.
command	Command	The request command that was sent to the device.

License

MIT