The 7i74 is a 8 channel RS-422 interface for Mesa's 25 pin I/O FPGA cards. The 7i74 has 8 independent receive and transmit channels. One transmit channel has a independent drive enable for bus or 2 wire half duplex systems. Serial I/O connectors are RJ45 jacks allowing standard CAT5 cables to be used for high speed serial links. The 7i74 also supplies 5V power on the RJ 4..
The 7I75 is a breakout card for Mesa's 25 pin I/O FPGA cards. In addition to providing a breakout function, the 7I75 protects the FPGA card from excessive input voltages and ESD. The 7I75 protects FPGA I/O from accidental contact from external voltages of +12 and -5V with built in diode clamps and 50 Ohm current limit resistors in series with all I/O pins. The 7I75 limits I/O pin..
The 7I76 is daughtercard/breakout board for use with MESA's 25 pin I/O FPGA cards like the 5I25. The 7I76 is designed for interfacing up to 5 Axis of step & dir step motor or servo motor drives and also provides a spindle encoder interface, isolated analog spindle speed control and 48 isolated I/O points for general purpose field I/O use. All step and direction outputs are buffered..
NEW : Recently a wiki was developed to help new users to create a basic set up using a 5i25 with a 7i77 using a single axis with a Argon servo drive. A complete wiki was developed http://wiki.eusurplus.com. The basic linuxcnc configuration can be downloaded here http://wiki.eusurplus.com/downloads/machinebuild_sample.zip
The 7I77 is daughtercard/breakout board for use with MESA's..
The 7I77ISOL is galvanic isolation card that electrically isolates and rebuffers signals from the FPGA controller card. The 7I77ISOL is useful in cases where severe electrical noise or ground loop problems exist or where longer cable runs are used between the FPGA card and the 7I77.
The 7I78 daughtercard/breakout board for use with MESA's 25 pin I/O FPGA cards like the 5I25. The 7I78 is designed for interfacing up to 4 Axis of step & dir step motor or servo motor drives and also provides a spindle encoder interface, and an isolated analog spindle control. All step and direction outputs are buffered 5V signals that can drive 24 mA. All outp..
The 7I85S is a four channel encoder plus 8 differential output plus one channel RS-422 interface for Mesa's Anything I/O series of FPGA interface cards. The 7I85S is designed for motion control applications. The 7I85S has four TTL or differential encoder inputs including index, eight differential ouputs that can be used as four differential step+ dir output pairs or PWM outputs or ot..