Dear sir,

we are using basic positioner application. We are select the hardware CU320-2PN, PM240-2 power madule, CUA32 and 1PH8 motor. We have configure the drive with motor and select basic positioner

with motor encoder. after that we have run the motor in jog mode with basic positioner. it is running ok. but in MDI mode, we are run the MDI block . motor (Axis)moves from maximum limit(2147482647) to 0 LU.

but we are set the position setpoint 800000 LU and velocity 30000 then  motor (Axis) move from 800000 LU to 0 LU. So please suggest me how to pass the position setpoint.

Parameter setting see the attachment.

Binit kumar

Hi Binit,

maybe you should have a look at the following application example:

https://support.industry.siemens.com/cs/ww/en/view/67261457 

and how the FB283 works 

https://support.industry.siemens.com/cs/ww/en/view/25166781 

it looks like you made a mix between telegram communication and static BICO inputs and this is leading to your positioning issue.

greeting

Dominik

Hi,

you have set the "transfer type selection" control bit to 1. This means that positioning is not done with an positive edge, it is always startet when the position setpoint is changed. Maybe your behavior comes from that. I do not really understand how your process should work as you have used a fixed position setpoint (always 80 000LU as setpoint??). So this can not really work in a senseful way if you select that the positioning is always started immediately with the change of the setpoint.

I recommend to start positionings with a controlled positive edge when the PLC program sends the command to do it.