Set PWM state in the event of a bus error (watchdog)

The state of the outputs in the event of a bus error is defined via the parameters "Watchdog":

The following options are available:

Desired state
of the output in the event of a bus error

Default in 0x80n0:05 1) "Watchdog"

set to specified value

0: default watchdog value

The specified pulse width "PWM output" of the output is set to the value defined in index 0x80n0:13 "Default output".

The period "PWM Period" remains unchanged.

set to specified value via ramp

1: Watchdog ramp

The specified pulse width "PWM Output" of the output is switched to the value specified in index 0x80n0:13 "Default output" via the ramp defined in index 0x80n0:14 "Default output ramp" (linear change [digit/ms])
.

The period "PWM period" remains unchanged.

Retain current value

2: Last value

The output retains the current state.

1) n = 8 for channel 1, n = 9 for channel 2

 

Ramp

You can define the time to reach the default value when the watchdog behavior is set to the value 1 "Watchdog ramp".

 

Set PWM state in the event of a bus error (watchdog) 1:

t: time in ms until the default value is reached.

ncurrent : the last output value that was received by the controller before the communication interruption.

ndefault : default value (CoE parameter 0x80n0:13).

vramp : ramp velocity in digits/ms (CoE parameter 0x80n0:14).