Siemens SIMATIC S7-1200

Technology instructions
10.3 Motion control
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
661
10.3.2
Configuring a pulse generator
1. Add a Technology object:
– In the Project tree, expand the node "Technology Objects" and select "Add new
object".
– Select the "Axis" icon (rename if required) and click "OK" to open the configuration
editor for the axis object.
Note
To ensure the consistency of your project af
ter you rename the technology objects,
download the project to the CPU while it is in STOP. A name change occurs when you
delete a technolology object and create a new technology object with a new name and
data block number.
– Display the "Select PTO for Axis Control" properties under the "Basic parameters" and
select the desired pulse.
Note
If the PTO has not been previously configured in the CPU Properties, the PTO is
configured to use one of the onboard outputs.
If you use an output signal board, t
hen select the "Device configuration" button to go
to the CPU Properties. Under "Parameter assignment", in the "Pulse options",
configure the output source to a signal board output.
– Configure the remaining Basic and Extended parameters.
2. Program your application: Insert the MC_Power instruction in a code block.
– For the Axis input, select the axis technology object that you created and configured.
– Setting the Enable input to TRUE allows the other motion instructions to function.
– Setting the Enable input FALSE cancels the other motion instructions.
Note
Include only one MC_Power instruction per axis.
3. Insert the other motion instructions to produce the required motion.
Note
Configuring a pulse generator to signal board outputs: Select the "Pulse ge
nerators
(PTO/PWM)" properties for a CPU (in Device configuration) and enable a pulse generator.
Two pulse generators are available for each S7
-1200 CPU V1.0, V2.0, V2.1, and V2.2.
S7
-1200 CPU V3.0 and V4.0 CPUs have four pulse generators available. In this same
configuration area under "Pulse options", select Pulse generator used as: "PTO".