Table 5-2 Parameter List For Heating A Liquid - Siemens SIMATIC ET 200S Operating Instructions Manual

Parameters
The following parameters are required for channel 0 of the 2PULSE to heat a liquid in pulse-
width modulation mode.
Table 5-2 Parameter List for Heating a Liquid
Parameter
Group diagnostics
Diagnostics DO 0
Behavior at CPU/Master-STOP
Mode
PWM output format
Time base
Function DI 0
On-delay
Minimum/pulse duration
Period
The additional parameters of channel 0 of the 2PULSE have no effect on pulse-width
modulation mode.
The parameters for channel 1 are not relevant in this application example.
Technological Functions
Operating Instructions, 02/2007, A5E00124867-05
Set Value
Not enabled
On
Turn off DO 0
Pulse-width modulation
Per mill
1 ms
Input
0
500
30000
5.4 Application Examples
Meaning
The following errors trigger a diagnostic
message:
Short circuit of digital output
•
Short circuit of the encoder supply
•
Parameter assignment error
•
The 2PULSE detects the short circuit error on
the digital output DO 0.
The output value is specified in [‰] (0 to 1000)
All the preset times are specified at a resolution
of 1 ms.
The digital input is not required for this
application
The 24 V control signal is immediately output
with SW_ENABLE=1
Minimum pulse duration:
This is 500 ms in the selected time base; this
also applies to the minimum interpulse period
This is 30 s in the selected time base
2PULSE
297