The [MESA Anything I/O] boards are FPGA-based, and can run with different firmwares.
Two drivers are supported by LinuxCNC. The older Hostmot-4 firmware /driver is most mature, but only works
with the 5i20 and is no longer actively developed. The newer HostMot2 driver works with all the [Anything I/O] boards.
HostMot2 is available in many different firmware configurations in LinuxCNC.
Many of the MESA FPGA-cards use 50-pin connector that has 24 I/O pins, 24 GND-pins, and Power (GND+VCC).
As an example cards with three of these connectors have 3x24 I/O pins while the new 3x20 has six connectors for 6x24 I/O pins.
A bigger FPGA allows more complicated firmwares.
"Interface" below refers to how the FPGA-card connects to the PC.
5i20 200k FPGA, 3 50-pin connectors, 72 pins, PCI interface. 5i21 400k FPGA, 1con. 68 pins, 12x RS422/RS485 10MB. PCI interface. 5i22 1.0M or 1.5M FPGA, 4 connectors, 96 pins, PCI interface 5i23 400k FPGA, 3 50-pin connectors, 72 pins. PCI interface 5i25 400k FPGA 2x DB25 connectors, PCI interface 7i43 200k or 400k FPGA, 2 50-pin connectors, 48 pins, Parallel port interface 4i65 200k FPGA, 3 50-pin connectors, 72 pins, PC/104-Plus interface 4i68 400k FPGA, 3 50-pin connectors, 72 pins PC/104-Plus interface 4i69 400k FPGA, 3 50-pin connectors, 72 pins PC/104-Plus interface 3x20 1.0M, 1.5M, or 2.0M FPGA, 6 50-pin connectors, 144 pins PCI-E interface.
7i33 4 channel analog servo interface with encoder inputs 7i37 Isolated I/O card 7i42 Breakout/FPGA protection card 7i30 Quad 100 Watt H-bridges for 4I27,4I34,4I65,5I20,7I60 7i40 Dual 400W driver 7i29 Dual 2KW H-bridge for 4I27 and FPGA cards 7i39 brushless motor drive. 7i44 8 channel RS-422 interface 7i47 12 channel motion oriented RS-422 interface 7i48 6 channel analog servo interface with encoder inputs 7i49 6 channel analog servo interface with resolver inputs 7I52 6 channel encoder + 6 channel RS-422 interface 7I52S 6 Channel encoder + 6 channel Step/Dir or PWM/DIR interface 7I53 12 channel encoder + 2 channel RS-422 interface
7i74 8 channel RS-422 interface 7i75 I/O protector 7i76 5 channel step/dir + 48 isolated I/O + spindle control + 1 RS-422 port 7i77 6 channel analog servo interface + 48 isolated I/O + 1 RS-422 port 7i78 4 channel step/dir + spindle control and 1 RS-422 interface
7i64 24 in / 24 out isolated Smart Serial card. Can connect up to 32 of them for massive IO 7i66 16 input 8 output isolated Smart Serial remote I/O card 7i69 48 I/O TTL Smart Serial card 7i70 48 input isolated Smart Serial card 7i71 48 output isolated Smart Serial card 7i73 Control panel/pendant Smart Serial card 8i20 2.2kW 3-phase Smart Serial motor drive. Mainly for brushless motors. Needs bldc comp.
7I65 supported in "master" (development branch). Generic SPI via custom components also now possible. 7i32 Dual 1/2 to 3A stepper driver experimentally supported using a comp module: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ContributedComponents#Mesa_7i32_micro_stepping_motor_driver when using these cards remember to set the pulse rate Daughter card Optimum PWM mode 7I33(T,TA) PDM 6 MHz 7I30 Straight PWM ~20 KHz 7I40 Straight PWM ~20..50 KHz 7I29 Straight PWM ~20 KHz
We'll use the 5i20 board as an example. Other boards are similar. With the 5i20 you can use the (firmware): svst8_4im2 with 2 quad servo cards sv12 with up to 3 quad servo cards svst8_4 with up to 2 quad servo cards the rest of the firmware for the 5i20 is not compatible with the quad servo card. look at the pattern of the pins on one connector of say the sv12 firmware. Configuration pin-out: IO Connections for P2 Pin# I/O Pri. func Sec. func Chan Pin func Pin Dir 1 0 IOPort QCount 1 Quad-B (In) 3 1 IOPort QCount 1 Quad-A (In) 5 2 IOPort QCount 0 Quad-B (In) 7 3 IOPort QCount 0 Quad-A (In) 9 4 IOPort QCount 1 Quad-IDX (In) 11 5 IOPort QCount 0 Quad-IDX (In) 13 6 IOPort PWM 1 PWM (Out) 15 7 IOPort PWM 0 PWM (Out) 17 8 IOPort PWM 1 Dir (Out) 19 9 IOPort PWM 0 Dir (Out) 21 10 IOPort PWM 1 /Enable (Out) 23 11 IOPort PWM 0 /Enable (Out) 25 12 IOPort QCount 3 Quad-B (In) 27 13 IOPort QCount 3 Quad-A (In) 29 14 IOPort QCount 2 Quad-B 31 15 IOPort QCount 2 Quad-A (In) 33 16 IOPort QCount 3 Quad-IDX (In) 35 17 IOPort QCount 2 Quad-IDX (In) 37 18 IOPort PWM 3 PWM (Out) 39 19 IOPort PWM 2 PWM (Out) 41 20 IOPort PWM 3 Dir (Out) 43 21 IOPort PWM 2 Dir (Out) 45 22 IOPort PWM 3 /Enable (Out) 47 23 IOPort PWM 2 /Enable (Out) that pattern of pins is what the quad card needs. on the sv12 all the connectors have the same pattern so all three connectors could use the quad card