import can
import time

bus = can.interface.Bus(bustype="socketcan", channel="can0", bitrate=500000)

node_id = 1
cob_id = 0x200 + node_id   # 0x201
value = 1234

data_bytes = value.to_bytes(2, byteorder="little", signed=True)
msg = can.Message(arbitration_id=cob_id, data=data_bytes, is_extended_id=False)

for i in range(10):
    try:
        bus.send(msg)
        print(f"Sent {value} to PLC (COB-ID=0x{cob_id:X})")
    except can.CanError:
        print("Message NOT sent")
    time.sleep(1)