Siemens appendix Using high-speed outputs for output cams on D410

Commissioning (software)

4.6 Using drive-related I/Os by SIMOTION

4.6.6Using high-speed outputs for output cams on D410

Using high-speed outputs for output cams / DOs with D410

Output cams are defined as being the position-dependent output of switching signals. The TO output cams and TO output cam track technology objects control the output of output cams for SIMOTION.

The integrated digital outputs of the SIMOTION D can be used as cam output or as high- speed output with write access to the user program. In order to be able to use the high- speed outputs, one of the 39x message frames must be created.

Note

If I/O data is transferred using bus message frames, the update of the I/O data is subject to the set bus cycle. This means an I/O using a 39x message frame can change its status just once in each bus cycle of the PROFIBUS Integrated.

For SIMOTION D onboard outputs, the outputs are controlled using direct write accesses to the hardware (i.e. bypassing the message frame). This means:

•Write accesses to digital outputs act with a particularly short delay time because the write access is independent of the bus cycle.

•A more accurate output of the cam output is possible

For fast write accesses from the user program, the resulting delay time has the following form:

•User program delay time -> terminal register: max. 75 μs

•Load-dependent output delay time of the hardware for D410: L -> H: max. 400 μs

H -> L: max. 100 μs

High-speed outputs of output cams

If you use the output as high-speed output of a cam output, for the configuration of the TO output cams / TO output cam track, enter the logical hardware address and the bit number of the used output in the configuration screen form of the TO.

For additional information, see the SIMOTION Motion Control Output Cams and Measuring Outputs Function Manual.

High-speed digital outputs

If you use the output as high-speed digital output, create an I/O variable in SIMOTION SCOUT. The same addresses should be used for the high-speed digital outputs as those normally used for the digital outputs.

100	D410
	Commissioning Manual, 08/2008 Edition