Siemens SIMATIC ET 200SP Manual page 31

Setting the minimum pulse duration and minimum inter-pulse duration
You assign the minimum pulse duration and the minimum inter-pulse duration as a DWord
number value between 0 and 85,000,000 μs using the "Minimum pulse duration" channel
parameter configuration.
The unit is always microseconds. This value can only be changed using the configuration
parameter record.
Setting and changing the On-delay
● Permanent update
The On-delay can be controlled permanently using the control interface. The
MODE_SLOT bit has to be set (permanent update); LD_SLOT must have the value 2
(for On-delay). Set the On-delay as a value between 0 μs and 85,000,000 μs in the field
SLOT. The unit is always microseconds.
● Single update
Set the On-delay as a value between 0 μs and 85,000,000 μs in the configuration
parameters. The unit is always microseconds. Alternatively, perform a single update
using the control interface. MODE_SLOT has to be cleared (single-update); LD_SLOT
must have the value 2 (for On-delay). Set the On-delay as a value between 0 μs and
85,000,000 μs in the field SLOT.
If you change the On-delay value during the output sequence, then the new On-delay is
activated at the next output sequence. For more details about the use of the SLOT
parameter see SLOT parameter handling (Page 113).
Current measurement
Current measurement is available in PWM mode. Your control program can use current
measurement for control and diagnostic purposes.
For more information, refer to Function: Current measurement (Page 76).
Current control
Current measurement is available in PWM mode. Your control program can use current
measurement for control and diagnostic purposes.
For more information, refer to Function: Current control (Page 78).
Technology module TM Pulse 2x24V (6ES7138‑6DB00‑0BB1)
Manual, 09/2015, A5E35061186-AA
Modes and Functions
3.3 Pulse width modulation (PWM) mode
31