Timeout Communication Error

Hello Peter hopefully you can lead me in the right direction to troubleshoot this.

hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (3) Timeout
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (3) Timeout
hm2/hm2_7i92.0: Smart Serial Error: port 0 channel 0. You may see this error if the FPGA card read thread is not running. This error message will not repeat.
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (3) Timeout
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (3) Timeout
hm2/hm2_7i92.0: Smart Serial Error: port 0 channel 0. You may see this error if the FPGA card read thread is not running. This error message will not repeat.
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (3) Timeout
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (3) Timeout
hm2/hm2_7i92.0: Smart Serial Error: port 0 channel 0. You may see this error if the FPGA card read thread is not running. This error message will not repeat.
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (3) Timeout
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (3) Timeout
hm2/hm2_7i92.0: Smart Serial Error: port 0 channel 0. You may see this error if the FPGA card read thread is not running. This error message will not repeat.
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (3) Timeout
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (3) Timeout
hm2/hm2_7i92.0: Smart Serial Error: port 0 channel 0. You may see this error if the FPGA card read thread is not running. This error message will not repeat.
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (3) Timeout
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (3) Timeout
hm2/hm2_7i92.0: Smart Serial Error: port 0 channel 0. You may see this error if the FPGA card read thread is not running. This error message will not repeat.
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (3) Timeout
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (3) Timeout
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error

Sorry for the all the text, lots of repeat......Anyways the machine was stationary when the error occurred. Let me know what other info you will need from me. Thanks.

Usually this means total loss of communication between the 7I92 and 7I77

Most common causes are

1. 5V power issue on 7I77 (low 5V or total loss of 5V)
2. Watchdog bite due to real time issues

Hello Peter

I added a 5v power supply to exclude the possibility of a power issue to the 7i77, what do I need to check for real time issues. I have checked this system for latency issues in the past and never saw any alarming values from the test. What would I need to check while the system is running. I do have have a USB to RS485 running on a different thread speed. Let me know. Thanks.

Do you still have an issue with the external 5V power?

Also if you run LinuxcCNC from a terminal you can get the entire error log
which may catch a watchdog bite message

Yes. Still present present with an external 5v supply. I seem to be getting error (4) and (14)

OK well 4 and 14 are different than what you got before (which looked more like a power supply issue)

Can you start linuxcnc in a terminal and capture the actual errors?

How long (and what type) is the cable from the 7I92 to the 7I77?

Did you make sure the 7I77 and 7I92 are jumpered for external power (7I77 W5 right 7I92 W3,W4 down)

Also what LinuxCNC version are you running?

The cable was purchased from you. The length I wanna say is 3ft (1m). I can get you the exact errors on Monday. I want to say the jumpers are what you stated because I was using USB power from the PC as an external source. As far as LinuxCNC version I am using the most updated version of Machinekit.

I would try LinuxCNC 2.7.8 (or master), Machinkit is not as up-to-date as
LinuxCNC WRT Hostmot2/sserial driver bug fixes

Hello Peter see below

hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.1 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (4) Extra character
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error
hm2/hm2_7i92.0: Smart serial card hm2_7i92.0.7i77.0.0 error = (13) Communication error