LENZE EVS9322-ES EVS9322-ES EVS9322-ES EVS9322-ES EVS9322-ES EVS9322-ES

control interface/feedback interface for controlling the high speed counter.
For information on configuring the technology object and programming the associated
instruction, refer to the , ET 200MP, ET 200SP Counting, measurement and position The pulse-width modulation (PWM) mode of the compact CPU has the following technical
properties:For the pulse width modulation (PWM) mode, the user program directly accesses the control
and feedback interface of the channel.
Reconfiguration via the instructions WRREC/RDREC and parameter assignment data record
128 is supported. You can find additional information in section Parameter data records
(PWM) (Page 180).
You control the on-load factor (pulse-cycle ratio) of the pulse width via the OUTPUT_VALUE
field of the control interface. Pulse width modulation generates continuous pulses based on
this value. The period duration is adjustable.The control program must output the enable for the output sequence with the help of the
software enable (SW_ENABLE 0 → 1). The feedback bit STS_SW_ENABLE indicates that
the software enable is pending at the PWM.
If the software enable is activated (rising edge), STS_ENABLE is set. The output sequence
runs continuously, as long as SW_ENABLE is set.
Note
Output control signal TM_CTRL_DQ
• If TM_CTRL_DQ = 1, the technology function takes over the control and generates pulse
sequences at the output PWM DQA.
• If TM_CTRL_DQ = 0, the user program takes over the control and the user can set the
output PWM DQA directly via the control bit SET_DQA.Deactivating the software enable (SW_ENABLE = 1 → 0) cancels the current output
sequence. The last period duration is not completed. STS_ENABLE and the digital output
PWM DQA are immediately reset to 0.
A renewed pulse output is only possible after a restart of the output sequence.
Minimum pulse duration and minimum interpulse period
You assign the minimum pulse duration and the minimum interpulse period with the
parameter "Minimum pulse duration".
● A pulse duration determined by the technology function or PWM channel which is shorter
than the minimum pulse duration will be suppressed.
● A pulse duration determined by the technology function or PWM channel which is longer
than the cycle duration less the minimum interpulse period will be set to the value of the
cycle duration (output switched on permanently).OUTPUT_VALUE assigns the on-load factor for the current period duration. You select the
range of the field OUTPUT_VALUE of the control interface with the "Output format"
parameter.
● Output format 1/100: Value range between 0 and 100
Pulse duration = (OUTPUT_VALUE/100) x period duration.
● Output format 1/1000: Value range between 0 and 1 000
Pulse duration = (OUTPUT_VALUE/1 000) x period duration.
● Output format 1/10000: Value range between 0 and 10 000
Pulse duration = (OUTPUT_VALUE/10 000) x period duration.
● Output format "S7 analog output": Value range between 0 and 27 648
Pulse duration = (OUTPUT_VALUE/27 648) x period duration.
You assign OUTPUT_VALUE directly via the control program. A new OUTPUT_VALUE is
applied at the output when the next rising edge occurs.Permanent update
The period duration is permanently controlled via the control interface. The MODE_SLOT
bit must be set ("1" means permanent update); LD_SLOT must be set to value 1 ("1"
means period duration). Set the period value in the field SLOT. The unit is always a
microsecond.
– High-speed output activated: between 10 μs and 10 000 000 μs (10 s) in the field
SLOT