------------------------------------------------------------------------------------------
Split from PWM use .

0_Einstein

cosmosk

Hi, I'm just starting with the S7-1200.
I have a Relay CPU and an SM 1223 signal board. The former prevents me from using PWM/PTO or motion control of an axis as far as I can tell. From what I'm reading, I'm led to believe I can run it off the dignal board, but I cannot set the Output Source to anything. It is grayed out as "Intergrated CPU output". Where I'm seeing this is after double clicking on the PLC in the device view. Double clicking on the signal board only shows DIs and DOs and no Pulse Generators to configure.

Any ideas?

Thanks

Relay outputs cannot operate fast enough and clean enough to drive pwm/pto so you cannot use them with that cpu. If you have a dc output signal board, you may be in luck.

If you want pwm/pto, get a dc output plc rather than rly output. If you need relay output, add a relay output module to the plc rack.

 Hi, i too have the similar setup. Cpu 1215c dc/dc/rly and signal module sm 1222 DQ 8 x 24v, but i cannot seem to configure the hardware outputs for PTO. However, for signal board
sb 1222 DQ 4 x 24v, it was able to automatically configure the hardware outputs since it is connected directly onto the CPU and could configure. So is there a way to use the signal module instead, as ultimatum is to control 4 stepper motor or is there alternatives. Please help tq! 

0_Einstein

cosmosk

Hi, I'm just starting with the S7-1200.
I have a Relay CPU and an SM 1223 signal board. The former prevents me from using PWM/PTO or motion control of an axis as far as I can tell. From what I'm reading, I'm led to believe I can run it off the dignal board, but I cannot set the Output Source to anything. It is grayed out as "Intergrated CPU output". Where I'm seeing this is after double clicking on the PLC in the device view. Double clicking on the signal board only shows DIs and DOs and no Pulse Generators to configure.

Any ideas?

Thanks

Relay outputs cannot operate fast enough and clean enough to drive pwm/pto so you cannot use them with that cpu. If you have a dc output signal board, you may be in luck.

If you want pwm/pto, get a dc output plc rather than rly output. If you need relay output, add a relay output module to the plc rack.

 Hi, i too have the similar setup. Cpu 1215c dc/dc/rly and signal module sm 1222 DQ 8 x 24v, but i cannot seem to configure the hardware outputs for PTO. However, for signal board sb 1222 DQ 4 x 24v, it was able to automatically configure the hardware outputs since it is connected directly onto the CPU and could configure. So is there a way to use the signal module instead, as ultimatum is to control 4 stepper motor or is there other alternatives. Please help tq!

Closed cause question posted twice.

The second thread with the subject Cannot configure the hardware outputs for PTO is published within the conference SIMATIC S7-1200.