Digital electronic modules
14.10 Overview of parameters of the digital electronic modules
ET 200pro distributed I/O system
380
Operating Instructions, 03/2013, A5E00335544-08
Input delay
You can set an input delay to suppress coupled-in interference.
This will suppress interference pulses from 0 ms through to the set input delay (in ms). The
configured input delay has a tolerance as described in the technical specifications for the
module.
A long input delay will suppress longer interference pulses; a short input delay will suppress
shorter interference pulses.
Hardware interrupt enable
If this parameter is enabled, the hardware interrupt for the entire module is enabled. You can
then configure channel-by-channel whether a hardware interrupt is triggered and the edge
that triggers it.
The CPU's operating system calls a hardware interrupt OB (e.g. OB 40) at a hardware
interrupt. In the hardware interrupt OB, you can program the desired response to the edge
transition.
Freely configurable channel 0 - 3
With this parameter, you configure whether the channel is to be operated as an input or
output.
Hardware interrupt on falling edge
With an enabled hardware interrupt (for the entire module), you can configure channel-by-
channel whether a hardware interrupt is to be triggered on a falling edge.
Hardware interrupt on rising edge
With an enabled hardware interrupt (for the entire module), you can configure channel-by-
channel whether a hardware interrupt is to be triggered on a rising edge.
Reaction to CPU/master STOP
Use this parameter to set the reaction of the module to a CPU/master STOP:
●
Shutdown: The digital output is de-energized.
●
Hold last value: The last value of the digital output remains active.
●
Output substitute values: The module outputs a configured substitute value.
