TPMC671 User Manual Issue 1.1
Page 5 of 28
1 Product Description
The TPMC671 is a standard single-width 32 bit PMC with 16 digital inputs (24V) galvanically isolated
from the computer system by optocouplers. The inputs are also potential free to each other. A high
performance input circuit ensures a defined switching point and polarization protection against
confusing the pole.
All inputs have a common electronic debounce circuit with a freely programmable debounce time.
All inputs can generate an interrupt. The signal edge handling is programmable to interrupt on rising,
falling or both edges of the input signal.
The TPMC671 has 16 digital high side or low side switches (build option) with galvanic isolation from
the computer system by optocouplers. The outputs are isolated against each other in groups of four
outputs. All outputs are protected against short-circuit and thermal overload. The output drivers are
capable of driving 0.5A continuous per channel.
A hardware watchdog clears all outputs in case of trigger fail. The TPMC671-1x provides front panel
I/O, the TPMC671-2x provides P14 I/O.
Figure 1-1 : Block Diagram
