Hardware Interrupt Handling on S7-300 PLC

[L D[AR2P#0.0]]

What application are you working on that requires a h/w interrupt?

 

[hiralpatel.0457]

Double click on the module and check the Addresses tab.

dear sir,

if i have installed a DI16 module in 3rd slot, and i want to configure i1.1 rising edge as a hardware trigger then what i have to enter in module address and point_addr?

 

[L D[AR2P#0.0]]

You don't, the data you refer to is filled in by the CPU to tell you which interrupt has occurred (you can have many interrupt sources).

You enable the h/w interrupt in the h/w config editor for the card involved:

 

[Mike_RH]

There seems to be two questions from the OP.
1. Set up of the HW interrupt for a DI module.
2. Simulation of OB40 interrupt with PLCSIM


L D 's post and screen capture shows the setup of the interrupt

For the OP, the operation of the digital interrupt is described in chapter 3 of this manual:http://support.automation.siemens.com/WW/view/en/8859629
Check figure 3-6.

The triggering of OB40 in PLCSIM, is Execute Menu - > Trigger Error OB -> Hardware Interrupt (OB40-47. In the dialog box that appears, from what the OP indicated, use 0 as the module address and 2000 as the POINT_ADDR (I think). This will simulate a OB40 for his DI module.

Thats my understanding, and my 2 cents.

 

[L D[AR2P#0.0]]

Yes Mike, you are right - I missed that the OP was using PLCSIM to trigger OB40 so scrub my post #18

 

[hiralpatel.0457]

There seems to be two questions from the OP.
1. Set up of the HW interrupt for a DI module.
2. Simulation of OB40 interrupt with PLCSIM


L D 's post and screen capture shows the setup of the interrupt

For the OP, the operation of the digital interrupt is described in chapter 3 of this manual:http://support.automation.siemens.com/WW/view/en/8859629
Check figure 3-6.

The triggering of OB40 in PLCSIM, is Execute Menu - > Trigger Error OB -> Hardware Interrupt (OB40-47. In the dialog box that appears, from what the OP indicated, use 0 as the module address and 2000 as the POINT_ADDR (I think). This will simulate a OB40 for his DI module.

Thats my understanding, and my 2 cents.

i have sending you screenshot of mine one...

i have configured an input(i0.0) of DI16 module which is in 4th slot.. and i have given W#16#0 as a module address and DW#16#2000 as a POINT_ADDR.

it accepts the configuration but still it cann't work(OB40 was not called up)..

 

[L D[AR2P#0.0]]

What code have you got in OB40 ?

I used the following test code to verify OB40 was being called with POINT_ADDR=1 or POINT_ADDR=2000

      L     MW   300
      +     1
      T     MW   300

 

[Mike_RH]

Works for me - why don't you post your project?

 

[hiralpatel.0457]

What code have you got in OB40 ?

I used the following test code to verify OB40 was being called with POINT_ADDR=1 or POINT_ADDR=2000

      L     MW   300
      +     1
      T     MW   300

m using the same code... ok now it is being called by click on apply button..

by applying input in I0.0 it's not called....

Only by click on Apply button it is been called....

how is OB40 called by applying input in I0.0?

 

[Mike_RH]

The PLCSIM is simulating the call to OB40, you must press the apply button to trigger the simulation.
You need real hardware to test with the input.

 

[hiralpatel.0457]

The PLCSIM is simulating the call to OB40, you must press the apply button to trigger the simulation.
You need real hardware to test with the input.

ok.. now i got my answer...

 

[L D[AR2P#0.0]]

What application are you working on that requires a h/w interrupt?

..

 

[Mike_RH]

ok.. now i got my answer...

Your welcome.