The MESA 7C80 is motion oriented FPGA motherboard host for a Raspberry Pi CPU. The 7C80 connects to the GPIO interface and uses SPI for FPGA communication. The 7C80 provides 5V power for the RPI via a built in switching regulator.
The 7C80 has 6 channels of differential STEP/DIR outputs with step rates up to 10 MHz. 24 isolated inputs are provided for general control use including limit switch, control panel inputs, and up to 4 MPGs. Inputs operate with 4V to 36V DC and have 2 independent positive or negative commons for sourcing or sinking input applications.
Eight 36V 2A isolated outputs allow sinking, sourcing, or combinations of both. Spindle control includes a high speed differential or single-ended encoder input for spindle feedback and an isolated analog spindle interface with real time speed and direction control.
A RS-422/RS-485 interface is provided for I/O expansion via a serial I/O daughtercards or general RS-422/RS-485 use.
In addition to the on card I/O, A FPGA expansion connector compatible with Mesa's 25 pin daughtercards or standard parallel port breakout boards allow almost unlimited I/O options including additional quadrature or absolute encoder inputs, step/dir or PWM/dir outputs, and field I/O expansion to hundreds of I/O points.
All field wiring is terminated in pluggable 3.5 mm screw terminal blocks. The 7C80 mounts in standard 107 mm DIN rail channels and is powered by 8V to 40V.
Model Overview
|
7i76E |
7i76ED |
7i96 |
7i97 |
7i95 |
7C80 |
| Interface |
100 MBit Ethernet |
Raspberry Pi GPIO |
| STEP/DIR Axis |
5 |
6 |
| Encoder Inputs |
1 |
6 |
1 |
| Isolated Field Inputs |
32
Sink |
11
Sink/Source |
16
Sink/Source |
14
Sink/Source |
| Isolated Field Outputs |
16
Source |
16
Sink |
6
Sink/Source |
8
Sink/Source |
| Analog Spindle Output |
1 |
|
1 |
|
7i76E |
7i76ED |
7i96 |
7i97 |
7i95 |
7C80 |
| Maximum Step Rate |
10 MHz |
| Serial Expansion Ports |
1
RS-422 |
1
RS-422/485 |
2
RS-422/485 |
1
RS-422/485 |
| 25-Pin Expansion Ports |
2 |
1 |
| VIN Supply Voltage |
8 .. 32 V |
5 V |
8 .. 40 V |
| STEP/DIR Outputs |
5 V / 24 mA |
| Field Inputs |
5 .. 32 V |
3 .. 36 V |
| Field Outputs |
5 .. 28 V / 300 mA |
5 .. 36 V / 2 A |
| Output Short-Circuit Protection |
|
|
Extended Specifications