[Geo Brick LV Digital I/O Expansion]

The expanded Brick LV has a 32IN/16Out digital IOs. We need more than this in our applications. How do you compare getting additional I/Os through MACRO vs MODBUS? What are the cons and pros? Is there any other solution other than MACRO/MODBUS available?

 

We need 48 IN/48 out.

[About minium block time]

thank you for replies all the same, but I'm afraid that my meaning don't be clearly understood. Isx87，Isx88,Isx89 is default value, they have been overridden by TA,TS,and F in the program. So I don't worry about them too much. maybe I should describe my question like this, If there are very small length program blocks in the blended move. the length is too short that it just take very small time to over. for example, the very small time is 0.001ms exaggeratedly. Any way can prevent the speed from slowing down when over this program blocks?

 

If you are not limited by Ixx17,Ixx16,then this is where you might want to use "Lookahead". If your program blocks are shorter than your TA, PMAC will reduce the speed so that every block will execute in TA time. With lookahead you can achieve shorter program blocks and maintain your desirable TA.

[Servo loop tuning_application]

I had similar problem having a PMAC and sinasoidal drive. Increase your Kp and Ki and decrease your Kd.

 

Definitely it will cause motor vibration, I dare not do that , aha. I am not going to destroy my machine.