Siemens SIMATIC ET 200S Operating Instructions Manual page 270

2PULSE
5.3 Modes and Functions
Control and Feedback Signals of Pulse-Width Modulation Mode
Control and Feedback
Signals
Control signals
Software enable
(SW_ENABLE)
Output value
Period duration factor
Feedback signals
STS_ENABLE
STS_DO
STS_DI
ACK_SW_ENABLE
270
Meaning
Starting and canceling of the
output sequence.
The value that is output in pulse-
width modulated format on the
digital output DO.
You can change the assigned
period:
Period = factor x 0.1 x assigned
period
Indicates an output sequence is
running.
Indicates the signal level on the
digital output DO.
Note the update rate.
Indicates the signal level on digital
input DI.
Indicates the status of
SW_ENABLE.
Value Range
0 = SW_ENABLE canceled
1 = SW_ENABLE set
0→1 = start of output sequence;
may be dependent on the
hardware enable
Depending on the PWM output
format:
Per mill 0 to 1000
•
S7 analog output
•
0 to 27648
If you enter an output value >
1000 or 27648, the 2PULSE limits
this to 1000 or 27648.
Factor: 0 to 255
Period duration:
2 x minimum/pulse duration to
65.635 s.
If a period duration of < 2 x
minimum/pulse duration occurs or
< 400 µs or if factor = 0, the
effective period = 2 x
minimum/pulse duration.
In this case, the signal 0 is issued
if the output value on the digital
output DO < 500‰ or 13824, and
signal = 1 is output if the output
value > 500‰ or 13824.
If there is a period > 65.535 s, it is
limited to 65.535 s.
0 = pulse output blocked
1 = pulse output running
0 = signal 0 on digital output DO
1 = signal 1 on digital output DO
0 = signal 0 on digital input DI
1 = signal 1 on digital input DI
0 = SW_ENABLE canceled
1 = SW_ENABLE set
Operating Instructions, 02/2007, A5E00124867-05
Channel 0 Channel 1
address address
Byte 2: Byte 6:
Bit 0 Bit 0
Word 0 Word 4
Byte 3 Byte 7
Byte 0: Byte 4:
Bit 0 Bit 0
Byte 0: Byte 4:
Bit 1 Bit 1
Byte 0: Byte 4:
Bit 2 Bit 2
Byte 0: Byte 4:
Bit 3 Bit 3
Technological Functions