Digital input card PA-1700-2

TTL16-I/Osafety

The PA-1700-2 is a fast pulse counting card designed especially for the use in industrial environment. The card is intended for the direct connection of 3 or 6 incremental encoders. It is equipped with inputs for axis control (reference signal, strobe input, error signal). The input channels are protected with transil diodes and EMI filter. The card can be programmed with single, double, quadruple resolution or in direct mode. In direct mode and when measuring pulse width, frequences up to 100 MHz can be processed directly. The card automatically recognises the direction of the incremental encoders. 3 timers allow the generation of interrupts. Features Acquisition of incremental encoders Frequency measurement Pulse width measurement Connection of 3 or 6 incremental encoders Possible configurations: 3 channels, 32-bit counting depth, diff. or TTL on the front connector/6 channels, 16-bit counter depth, diff. or TTL divided in 3 channels on the front connector and 3 on the connector for ribbon cable Automatic recognition of direction Mode with single, double or quadruple resolution Frequency measurement 10 MHz in direct mode, 2.5 MHz in quadruple mode 3 “reference” inputs for reference logic 3 “error” inputs for error signals, external strobe inputs Software or hardware reset 3 x 16-bit timer (82C54): Generation of interrupts, Strobe of the counters with timer-defined intervals, Programmable reference frequency for frequency and pulse width measure Interrupt with timer or through external strobe of the counters 3 x 8 TTL I/O Addressing through DIP switches to any address in the I/O space AT board with 16-bit access Safety features