Socket Timeout about iec62056-21

[Krolken]

OK. What happens when you just try to do a standard readout:

from iec62056_21.client import Iec6205621Client

client = Iec6205621Client.with_tcp_transport(address=('192.168.0.1', 8000), device_address='12345678', password='00000000')
client.connect()
print(client.standard_readout())

Also if you have some debug output that would be good.

[gucluceyhan]

14:53:54,32 DEBUG: Connecting to ('5.26.220.136', 502)
14:53:54,870 INFO: Staring init sequence
14:53:54,870 INFO: Sending request message: RequestMessage(device_address='51024441')
14:53:54,870 DEBUG: Sent b'/?510244418!\r\n' over transport: TcpTransport
14:53:54,870 DEBUG: Resting for 0.25 seconds
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/iec62056_21/transports.py", line 339, in _recv
b = self.socket.recv(chars)
TimeoutError: timed out

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/Users/gucluceyhan/test_sayac.py", line 13, in
print(client.standard_readout())
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/iec62056_21/client.py", line 179, in standard_readout
self.startup()
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/iec62056_21/client.py", line 145, in startup
ident_msg = self.read_identification()
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/iec62056_21/client.py", line 247, in read_identification
data = self.transport.simple_read(start_char="/", end_char="\x0a")
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/iec62056_21/transports.py", line 144, in simple_read
b = self.recv(1)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/iec62056_21/transports.py", line 191, in recv
return self._recv(chars)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/iec62056_21/transports.py", line 341, in _recv
raise TransportError from e
iec62056_21.transports.TransportError

[Krolken]

OK. So the device wont even reply.

First thing is to omitt the address. Just set it to "". This usually works for point-to-point interfaces.

It could also be that the modem does not do a conversion to 7E1 and you need to so that client side. See my answer here for more info: #16 (comment)

If your Hercules program have a communication log it would be good if you could add it to the issue to see if they are doing stuff in a weird way.