Here's a py script to continuously read the diag registers (requires
ethercat_master.py). While running this, one may wiggle EtherCAT cables to
help identify intermittents.
Best regards - Dave
>
> Message: 3
> Date: Wed, 06 Jul 2016 13:43:37 -0700
> From: Henry Bausley <hbaus...@deltatau.com>
> To: Ralf Roesch <ether...@cantastic.org>
> Cc: "etherlab-users@etherlab.org" <etherlab-users@etherlab.org>
> Subject: Re: [etherlab-users] Intermittent Large number of datagrams
> UNMATCHED
> Message-ID: <1467837817.9419.71.camel@henry-ThinkCentre-M93p>
> Content-Type: text/plain; charset="UTF-8"
>
>
> Thanks for all the great suggestions everyone. Now that I'm back from
> holiday I will monitor registers 0x300 and 0x310 per the suggestions.
>
> Ralf,
>
> The drives we are using are Lenze i700 drives.
>
> I will also try changing the network interface. Currently the network
> interface giving a problem is reported as a
> Intel 82579LM which is just a PHY, so I assume the controller is in the
> chipset.
>
> I will try using the additional port on my PC which has an Intel 82574L
> and see if I have better luck.
>
> I will keep you posted.
>
>
>
# -*- coding: utf-8 -*-
"""
bus_diag
===========
Scan EtherCAT bus slaves and read out bus diagnostic registers.
Created on 2015-07-28
Author Dave Page
"""
import time
from ethercat_master.ethercat_master import get_slaves, MasterDevice
from collections import namedtuple
if __name__ == "__main__":
class PortState(object):
def __init__(self, pos, ecat):
self.position = pos
self.ecat = ecat
self.invalid_frame = [0]*4
self.rx_error = [0]*4
self.forwarded_error = [0]*4
self.ecat_processing = 0
self.lost_link = [0]*4
self.read_fail = 0
def __str__(self):
return """%3d: %-50s fail: %3d frame: %3d %3d %3d %3d rx: %3d %3d
%3d %3d forward: %3d %3d %3d %3d proc: %3d link: %3d %3d %3d %3d""" % tuple(
[self.position, self.ecat.name, self.read_fail] + self.invalid_frame +
self.rx_error + self.forwarded_error + [self.ecat_processing] +
self.lost_link)
with MasterDevice(0) as m:
master = m.get_master()
slaves = []
for i in xrange(master.slave_count):
slaves.append( PortState(i, m.get_slave(i)) )
while True:
print
print
for slav in slaves:
r300 = 0
r308 = 0
r310 = 0
try:
# Read 0x0300 - 0x0307
r300 = m.read_reg(slav.position, 'uint64_t', 0x0300)
# Read 0x0308 - 0x030f
r308 = m.read_reg(slav.position, 'uint64_t', 0x0308)
# Read 0x0310 - 0x0313
r310 = m.read_reg(slav.position, 'uint32_t', 0x0310)
#print '%016x %016x %08x' % (r300, r308, r310)
except:
slav.read_fail += 1
try:
# Reset all
m.write_reg(slav.position, 'uint64_t', 0x0300, 0)
m.write_reg(slav.position, 'uint64_t', 0x0308, 0)
m.write_reg(slav.position, 'uint32_t', 0x0310, 0)
except:
print 'Reset failed'
# Accumulate errors
for p in xrange(4):
slav.invalid_frame[p] += (r300 >> (p*16)) & 0xff
slav.rx_error[p] += (r300 >> (8+p*16)) & 0xff
slav.forwarded_error[p] += (r308 >> (p*8)) & 0xff
slav.lost_link[p] += (r310 >> (p*8)) & 0xff
slav.ecat_processing += (r308 >> 32) & 0xff
print slav
time.sleep(2)
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