Dear Experts,

I am having a CPU1214C DC/DC/DC (6ES7214-1AG40-0XB0 _V4.2).

I am controlling 2 third party servos with pulse train outputs.

for positioning i am using Move absolute and move relative blocks.

for servo 1 i am having total 36 positions, and servo 2 i am having 72 positions.

all positions are dependent on each other.

e.g if position1 of servo1 is complete then only position1 of servo2 will start

     and from done bit of position1 of servo2 next position2 of servo1 will start.

My question is can i use 36 blocks of move absolute and 72 blokes of move relative in both servo1 and servo2 respectivly.

or too many blocks will create problem???

Hello.

How about using the MC_CommandTable?
It is possible to execute one step at a time - if required.

BR

Hello.

Mister T

Hello,

I think, "MC_CommandTable" is working only with one axis. There is no data exchange between two axes, like the application should do, isn't it?

Only the Topic Starter can answer, but I understand that there are two single axis that makes turns to make movement. The S7-1200 is not suited if the axis would be in need of interpolation (in-motion dependent motion control).

The several "MC_CommandTable" DBs can be configured. Each step or group of steps of the table can be triggered. Data in the DB could also be modified to suit the changing conditions. It is very flexible to do this and code can be "cleaner".

I make the suggestion just to put an alternative idea on the table -> brainstorming.

Regards.

#dP

Hello.

Mister T

Hello,

I think, "MC_CommandTable" is working only with one axis. There is no data exchange between two axes, like the application should do, isn't it?

Only the Topic Starter can answer, but I understand that there are two single axis that makes turns to make movement. The S7-1200 is not suited if the axis would be in need of interpolation (in-motion dependent motion control).

The several "MC_CommandTable" DBs can be configured. Each step or group of steps of the table can be triggered. Data in the DB could also be modified to suit the changing conditions. It is very flexible to do this and code can be "cleaner".

I make the suggestion just to put an alternative idea on the table -> brainstorming.

Regards.

 Dear Sir,

My exect application is as shown in the drawing. 

I have to do motion on a 12sided polygon Furnace to distribute the material.

So here two different servos X and Y controlling a conveyor in forward reverse(Y) and left right(X) direction.

here X1,Y1 is home position. then when machine starts  servo X will achieve X2 position,

from X2 done bit  Y servo will achive Y2 position and X will achive X3 position.

SO i am having total 18 Y positions in Forward and 18 in reverse.

and 36 X positions in forward and 36 in reverse. 

I have tried command table but as per client requirement he want the change all positions from the hmi when needed.

If you have any simpler method of programming please let me know.

Hello.

hsnaik

Dear Sir,

My exect application is as shown in the drawing. 

I have to do motion on a 12sided polygon Furnace to distribute the material.

So here two different servos X and Y controlling a conveyor in forward reverse(Y) and left right(X) direction.

here X1,Y1 is home position. then when machine starts  servo X will achieve X2 position,

from X2 done bit  Y servo will achive Y2 position and X will achive X3 position.

SO i am having total 18 Y positions in Forward and 18 in reverse.

and 36 X positions in forward and 36 in reverse. 

I have tried command table but as per client requirement he want the change all positions from the hmi when needed.

If you have any simpler method of programming please let me know.

Thank you for the picture. It speaks volumes.

The Command Table can be a solution, if the count of movements stay constant. The DB that the Command Table creates - have a look at it. Then have a closer look at the instruction that can activate the movements. You can dictate exactly which steps to execute.

The alternative to this is to execute from an array of commands. This is complicated - sorry I am not willing to detail this method.

BR