Comments (8)
pjkundert
commented on July 20, 2024
To see what error codes the Omron is returning from the get_attribute request, add some "-v" options to the command.
As for the --route-path: it appears that (for some reason) the JSON specification for the route path you are supplying is not being parsed correctly, by the Python 'json' module. It could be due to invalid characters (non-ASCII quote symbols, for example). Windows is notorious for this, unfortunately, and getting quoting right on the command line is extremely difficult. Is it possible to try it from a Linux host, or on a Mac?
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vinssurfer
commented on July 20, 2024
Thanks for your answer.
I'm french so mayby quote is not same ASCII code. But I can't try with Linux or Mac.
That's the result with -vv
python -m cpppo.server.enip.get_attribute -a 192.168.0.7 -vv "@0xC4/0x10/3"
06-20 15:54:34.400 MainThread enip.cli DETAIL __init__ Connect: TCP/IP to ('192.168.0.7', 44818)
06-20 15:54:34.478 MainThread enip.cli DETAIL cip_send Client CIP Send: {
"enip.session_handle": 0,
"enip.options": 0,
"enip.status": 0,
"enip.sender_context.input": "bytearray(b'\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00')",
"enip.CIP.register.options": 0,
"enip.CIP.register.protocol_version": 1
}
06-20 15:54:34.494 MainThread enip.cli NORMAL __init__ Connect: Success in 0.093s/ 5.000s
06-20 15:54:34.494 MainThread enip.cli DETAIL parse_oper Tag: '@0xC4/0x10/3' yields Operation: {'path': [{'class': 196}, {'instance': 16}, {'attribute': 3}]}.update({'route_path': None, 'send_path': None})
06-20 15:54:34.494 MainThread enip.cli DETAIL cip_send Client CIP Send: {
"enip.session_handle": 132096,
"enip.options": 0,
"enip.status": 0,
"enip.sender_context.input": "bytearray(b'0\\x00\\x00\\x00\\x00\\x00\\x00\\x00')",
"enip.CIP.send_data.interface": 0,
"enip.CIP.send_data.timeout": 0,
"enip.CIP.send_data.CPF.item[0].type_id": 0,
"enip.CIP.send_data.CPF.item[1].type_id": 178,
"enip.CIP.send_data.CPF.item[1].unconnected_send.service": 82,
"enip.CIP.send_data.CPF.item[1].unconnected_send.status": 0,
"enip.CIP.send_data.CPF.item[1].unconnected_send.priority": 5,
"enip.CIP.send_data.CPF.item[1].unconnected_send.timeout_ticks": 157,
"enip.CIP.send_data.CPF.item[1].unconnected_send.path.segment[0].class": 6,
"enip.CIP.send_data.CPF.item[1].unconnected_send.path.segment[1].instance":1,
"enip.CIP.send_data.CPF.item[1].unconnected_send.route_path.segment[0].link": 0,
"enip.CIP.send_data.CPF.item[1].unconnected_send.route_path.segment[0].port": 1,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.path.segment[0].class": 196,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.path.segment[1].instance": 16,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.path.segment[2].attribute": 3,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.get_attribute_single": true,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.service": 14,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.input": "bytearray(b'\\x0e\\x03 \\xc4$\\x100\\x03')"
}
06-20 15:54:34.494 MainThread enip.cli DETAIL format_pat Formatted
@0x00C4/16/3 from: [{'class': 196}, {'instance': 16}, {'attribute': 3}]
06-20 15:54:34.494 MainThread enip.cli DETAIL issue Sent 0.003/ 5.000s
: Single G_A_S @0x00C4/16/3 {
"path.segment[0].class": 196,
"path.segment[1].instance": 16,
"path.segment[2].attribute": 3,
"get_attribute_single": true,
"service": 14,
"input": "bytearray(b'\\x0e\\x03 \\xc4$\\x100\\x03')"
}
06-20 15:54:34.525 MainThread enip.cli DETAIL issue Sending 1 (Context b'0')
06-20 15:54:34.525 MainThread enip.cli DETAIL pipeline Issuing 0/ 1; curr: 0 - last: -1 == 1 depth
06-20 15:54:34.541 MainThread enip.cli DETAIL collect Rcvd 0.006/ 5.000s
{
"peer": [
"192.168.0.7",
44818
],
"enip.command": 111,
"enip.length": 20,
"enip.session_handle": 132096,
"enip.status": 0,
"enip.sender_context.input": "array('B', [48, 0, 0, 0, 0, 0, 0, 0])",
"enip.options": 0,
"enip.input": "array('B', [0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 178, 0, 4, 0, 142, 0, 5, 0])",
"enip.CIP.send_data.interface": 0,
"enip.CIP.send_data.timeout": 0,
"enip.CIP.send_data.CPF.count": 2,
"enip.CIP.send_data.CPF.item[0].type_id": 0,
"enip.CIP.send_data.CPF.item[0].length": 0,
"enip.CIP.send_data.CPF.item[1].type_id": 178,
"enip.CIP.send_data.CPF.item[1].length": 4,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.input": "array('B', [142, 0, 5, 0])",
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.service": 142,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.status": 5,
"enip.CIP.send_data.CPF.item[1].unconnected_send.request.status_ext.size": 0
}
06-20 15:54:34.650 MainThread enip.cli DETAIL collect Receive 1 (Context b'0')
06-20 15:54:34.665 MainThread enip.cli DETAIL pipeline Completed 1/ 1; curr: 0 - last: 0 == 0 depth
Tue Jun 20 15:54:34 2017: 0: Single G_A_S @0x00C4/16/3 == None
06-20 15:54:34.681 MainThread enip.cli DETAIL pipeline Pipelined 1/ 1; curr: 0 - last: 0 == 0 depth
06-20 15:54:34.681 MainThread enip.get NORMAL main 1 requests in 0.192s at pipeline depth 0; 5.198 TPS
Does "service": 14, corresponding to Service code in Omron documentation?
How can I change this value?
Thanks
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pjkundert
commented on July 20, 2024
Decimal 14 is hex 0x0E, so that's OK. I don't know if the OMRON does "routing" CIP requests (ie. with a route path encapsulation); perhaps try the "simple" non-routing CIP requests, by specifying the -S option to the ...get_attribute command. This eliminates the route-path and send-path encapsulation from the CIP request, and expects the receiving EtherNet/IP module to respond to the CIP request itself...
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vinssurfer
commented on July 20, 2024
Yes I have an answer with -S option
With this command I can read which mode the PLC is (run, program, monitor)
python -m cpppo.server.enip.get_attribute -a 192.168.0.7 -S "@0xC4/0x0/0x64"
Tue Jun 20 16:45:53 2017: 0: Single G_A_S @0x00C4/0/100 == [1, 0]
but I can't not access to the memory area
EIP21 omron.pdf
I will continue on Thursday...
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vinssurfer
commented on July 20, 2024
Hi,
I have no problem to read/write plc operating mode (service 0x0E and Ox10)
But to read/write memory or input/output, I need to change service code (service code 1C to 1F). You can see that in my previous post in the pdf file.
How can I change the service code? Is it an other function than get_attrribute?
Thanks
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vinssurfer
commented on July 20, 2024
Hello, I renew my question : is-it possible to change the service code and how?
Thanks
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je13fr
commented on July 20, 2024
I have this code to read attribute and if I remember me well it was due to this error (routing=false)
import socket
import time
import cpppo
from cpppo.server.enip import client
plc_ip_address = "192.168.1.10"
timeout = 5.0
import logging
cpppo.log_cfg['level'] = logging.ERROR
logging.basicConfig( **cpppo.log_cfg )
try:
with client.connector( host=plc_ip_address, timeout=timeout) as conn:
get_attr_single_operation = {
'path': [{'class': 4}, {'instance': 101}, {'attribute': 3}],
'method': 'get_attribute_single',
'send_path': '', 'route_path': False
}
failures,replies = conn.process(
operations=[get_attr_single_operation], timeout=timeout )
for rpy in replies:
print(rpy)
except Exception as exc:
print ("EtherNet/IP I/O Failed: %s" % ( exc ))
time.sleep( .1 )
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narogon
commented on July 20, 2024
I have exactly the same problem with Pepperl Fuchs IO link module.
The service to access the data is 0x4b not 0x0E (get single attribute) as said in documentation page 53
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