| Edge Detection
When enabled sixty-four of the lines can detect logic state changes. A flag is set in a 64-bit register for each input that changes state. The register may be polled to determine which inputs have changed state. The 621 may optionally generate an interrupt whenever state changes occur.
Synchronous I/O
Eight of the 72 I/O channels have special functionality. When programmed as inputs they may be used to latch input data upon command from an external strobe signal.
If these eight lines are programmed as outputs an external strobe signal can tri-state/enable the data outputs. For additional flexibility, the data direction of these special I/O lines are programmable in two 4-bit blocks.
External Relays
The 621 adapter may be connected to as many as three solid-state relay boards. Each 720RB relay board accepts twenty-four industry standard relays. Software & Manuals
The software development kit, SDK, includes the source code of a sample Visual Basic program and a C-language program that allows setting output lines and reading back their status. A 32-bit Windows NT/2000 DLL is also supplied.
621 Linux Driver >> Released 6/12/01
621 Instruction Manual >> Released 12/9/02
Driver Release Date 1998-07-01 >> Released 12/9/02
Driver Release Date 1998-08-06 >> Released 7/1/98
Driver Release Date 1999-04-23 >> Released 8/6/98
Driver Release Date 1999-07-09 >> Released 4/23/99
Driver Release Date 1999-08-05 >> Released 7/9/99
Driver Release Date 1999-08-05 >> Released 8/5/99
Driver Release Date 1999-10-08 >> Released 10/8/99
Driver Release Date 1999-11-30 >> Released 11/30/99
Driver Release Date 1999-12-01 >> Released 12/1/99
Driver Release Date 2000-08-09 >> Released 8/9/00
Driver Release Date 2002-04-04 >> Released 4/7/02
Drive Release Date 2002-12-06 >> Released 12/6/02
Driver Release Date 2003-01-27 >> Released 1/27/03
Driver Release Date2004-08-17 >> Released 8/19/04 | 
