I will try to be more specific. I created a mod file based on mesa_modbus.mod.
Code:
#define MAX_MSG_LEN 16 // may be increased if necessary to max 251
static const hm2_modbus_chan_descriptor_t channels[] = {
/* {TYPE, FUNC, ADDR, COUNT, pin_name} */
{HAL_U32, 3, 0x3003, 1, "voltage"},
{HAL_U32, 3, 0x3004, 1, "current"},
{HAL_U32, 3, 0x3005, 1, "speed"},
{HAL_U32, 3, 0x5000, 1, "faultcode"},
{HAL_U32, 6, 0x2000, 1, "motor"}
};
Then did:
Code:
sudo modcompile vfd_modbus.mod
That worked, it created a vfd_modbus.so in /usr/lib/linuxcnc/modules.
Then in my postgui_hal file:
Code:
loadrt vfd_modbus ports=hm2_7i96.0.pktuart.0
addf vfd_modbus servo-thread
Start linuxcnc and watch the terminal output:
Code:
... some stuff
hm2/hm2_7i96.0: created PktUART Interface function hm2_7i96.0.pktuart.0.
... more stuff
hm2/hm2_7i96.0: IO Pin 030 (TB2-16/TB2-17): PktUART Receive Channel #0, pin RX Data (Input)
hm2/hm2_7i96.0: IO Pin 031 (TB2-18/TB2-19): PktUART Transmit Channel #0, pin TX Data (Output)
hm2/hm2_7i96.0: IO Pin 032 (internal): PktUART Transmit Channel #0, pin Drv
...more stuff
HAL: ERROR: function 'vfd_modbus' not found
qtdragon_postgui.hal:19: addf failed
Shutting down and cleaning up LinuxCNC...
The instructions at
linuxcnc.org/docs/2.9/html/drivers/mesa_modbus.html
say 7i69 but I assume
that's just a typo. Not sure what to try next.
Jim
