DGH Corporation, H1770, H1770 Digital I/O Board
Features:
- Digital inputs and outputs via RS-232 or RS-485
- Connect to solid state relays to sense AC and DC voltages
- User defines any bit as input or output
- Controls digital I/O individually or all at once
- No software initialization required-I/O startup stored in EEPROM
- 15, 24, 64 bit versions
- Host-free communications in continuous mode
- Up to 7936 I/O points on a single twisted pair of wires
- Compatible with all DGH products
The H1770 digital input/output board contains 64 digital input/output bits. The input or output direction of each digital bit is user-selectable and may be set individually or all at once.
The H1770 series board level digital I/O products provide direct interface to industry standard mounting racks and solid-state relay I/O modules. Mounting racks such as the PB16 can be controlled directly with the H1770 boards.
The status of up to 64 digital inputs and control outputs are communicated to any host serial port in ASCII using jumper-selectable RS-232 or RS-485.
For more information, please see 
Data Sheet
