Problems with 7i76e setup
- deawe
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This file can be posted to a web site like:
http://pastebin.com
in order to provide information about the linuxcnc
system and configuration.
VIEWER=mousepad
Date: Sat Apr 1 13:24:30 EEST 2017
UTC Date: Sat Apr 1 10:24:30 UTC 2017
this program: /usr/bin/linuxcnc_info
uptime: 13:24:30 up 7 min, 1 user, load average: 1.12, 0.80, 0.40
lsb_release -sa: Debian Debian GNU/Linux 7.11 (wheezy) 7.11 wheezy
which linuxcnc: /usr/bin/linuxcnc
pwd: /home/dea
USER: dea
LOGNAME: dea
HOME: /home/dea
EDITOR:
VISUAL:
LANGUAGE: en_US:en
TERM: xterm
COLORTERM: Terminal
DISPLAY: :0.0
display size: 1280x1024 pixels (338x270 millimeters)
uname items:
nodename -n: linuxcnc
kernel-name -s: Linux
kernel-vers -v: #1 SMP PREEMPT RT Debian 3.2.86-1
machine -k: linuxcnc
processor -p: unknown
platform -i: unknown
oper system -o: GNU/Linux
/proc items:
cmdline: BOOT_IMAGE=/boot/vmlinuz-3.2.0-4-rt-686-pae root=UUID=2198db8f-3994-42a7-a495-4e348482a949 ro initrd=/install/gtk/initrd.gz lapic quiet rootdelay=5
model name: Intel(R) Core(TM)2 CPU 4300 @ 1.80GHz
cores: 2
cpu MHz: 1200.000
parport: e000-e002 : parport1 e003-e007 : parport1 ec00-ec02 : parport0
serial: 03f8-03ff : serial
Varsions:
gcc: gcc (Debian 4.7.2-5) 4.7.2
python: Python 2.7.3
git: git version 1.7.10.4
tcl: 8.5
tk: 8.5
glade: not_in_PATH
glade-gtk2: glade3 3.8.0
linuxcnc_var all:
LINUXCNCVERSION: 2.7.8
REALTIME: /etc/init.d/realtime
RTS: uspace
HALLIB_DIR: /usr/share/linuxcnc/hallib
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- PCW
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- deawe
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To conclude this I have attached a photo of the board powered through the TB3 terminal. The field power LED is lit and visible through the leads, but the logic power LED does not turn on. I guess we can agree then that the board is faulty? And for reference, the board is resting on an ESD mat, and have been so ever since I took it out of the bag it was delivered in.
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- tommylight
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- deawe
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According to the 7i76e manual: "If you wish to use a single power supply for the 7I76Es field outputs and field logic power, W1 should be placed in the left hand position. This connects field power to VIN." It's possible to make out the position of the jumper below the yellow TB1 connector in the photo I attached. The jumper positions in the manual refer to the board oriented with the RJ-45 connector on the left-hand side, so the photo has to be rotated 180 degrees to correspond to that.
In any case, I would not think that the field power jumper would affect the supply to the logic section of the card.
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- PCW
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with the order number and description of problem and the card can be returned for repair/replacement
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- rodw
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I've attached a very useful wiring diagram for the 7i76e uploaded to the forum by another member.
I have deviated from this setup which seems the same as yours becasue I have applied 5 volt power to P5. That means W1 jumper needs to be changed. Just note that if you use the MPG encoder inputs, you need to tie the GNDs together as per the note on Page 2.
If it is a faulty regulator, perhaps P5 will let you get the board going.
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- deawe
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rodw, thanks for the wiring diagram, that is very helpful! I have been looking for something similar, but my searches turned up empty. Do you happen to remember in which thread this was posted? It would be interesting to see a little bit more about it.
Thanks to you all for the prompt and valuable support!
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- tommylight
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- deawe
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The card should certainly work without 5V on that connector. The following from the manual:
In the photo, I supplied power to TB3 instead.The 7I76E can get its 5V Ethernet, encoder, step/dir and serial interface power from
connector P3 or the on card logic power regulator can be used with unregulated DC power
supplied to TB3
And also a few posts back:
If you cannot run the 7I76E from correct TB3 power, you have a bad or damaged 7I76E
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