7i77 Mode 3 coding in HAL file

Hello, 
I am trying to understand how to code the HAL file to allow for the 7i77 to be in Mode 3 to do encoder inputs on Pin 16 etc. My setup is ran through a 7I92H which runs to the 7i77 and the 7i74 through the headers. The 7I74 runs 7I70 and 7I71 for the respective inputs and outputs for the mill.  I feel like my wires are hooked up correctly to the pins. The ground is common to the field ground but it doesn't recognize the pendant A/B phases. I can see the axis select enable through Hal config as well as the increments select.  What setting do I need to have in the HAL file to make this convert to mode 3?  I think I have mine set up with 0=300xxx, which should get me mode 3 in my card correct? Do I need to run mesaflash to get it to change?

Also, can someone give me a tutorial on what the numbers/X's mean in their respective locations in the smart serial format?

Thanks for the help in advance, it is much appreciated. 

Thods1222 wrote:

Also, can someone give me a tutorial on what the numbers/X's mean in their respective locations in the smart serial format?

The config modparam is described here . Search for "sserial_port_N".

The Mesa FPGA cards support four SSerial "ports", where each port can handle up to eight SSerial "channels". N in sserial_port_N denotes port, and the string of numbers and x's sets the mode for each of the channels in that port; x means disabled. So "sserial_port_0=300xxx" would configure the six first channels of port 0 to modes 3, 0, 0, and channel 3-5 disabled. What the actual mode numbers mean depends on the type of Sserial device connected.

PCW wrote:

The channel layout depends on the specific firmware used.
You can determine the channel layout by using mesaflash's --readhmid function

The meaning of the 7i77's different modes are described in the 7i77 manual under "SOFTWARE PROCESS DATA MODES". Although that section doesn't mention which channel to the apply the mode to.

port_0=300xxx should be correct for standard 7I77 firmware

Note that likely you cannot read the A/B lines as individual inputs with 5V signals
(the digital inputs still have a ~ 1/2 field voltage threshold) but should be able to
read the MPG encoder counts on these pins:

hm2_7i92.0.7i77.0.0.enc0
hm2_7i92.0.7i77.0.0.enc1

I am also having issues with this 7i92-7i77. I do not see the hm2_7i92.0.7i77.0.0.enc0/hm2_7i92.0.7i77.0.0.enc1 signals in mode 3. I see no difference in halcmd show between "port_0=000xxx" and "port_0=200xxx and port_0=300xxx.

I enabled like this:
loadrt hm2_eth board_ip="10.10.10.10" config=" num_encoders=6 num_pwmgens=0 num_stepgens=0 sserial_port_0=300xxx"

I loaded most recent 7i92_7i77x2.bit into 7i92.

BTW, what is "7i92_7i77x1pktd.bit" for?

Ideas?????

Some parsing error/ bad chars in the config string?

7i92_7i77x1pktd.bit has a PacketUART rather than a sserial port
on the 7I77s RS-485 port

  I scrubbed text pretty well and no change. I only have power connected through the cable from 7i92, no other power connected. I have 2 yellow leds lit on 7i77.

Yep, only the analog side is working because there's no field power
With field power, you should get something like this on startup:

 

Thanks Peter! All is right with the world now....