OB35 for direct access to the masterdrive peripheral i/o’s

Kataeb

Member
Join Date
Jan 2007
Location
www.livelovelebanon.com
Posts
636
Hello sirs,
We have the following hardware on our machine:
1. CPU cpu 412-2dp, 256 kbyte ram Siemens 6ES7 412-2XG04-0AB0
2. Operator panel MP 277, 10'', touch, retentive memory. Siemens 6AV6 643-0CD01-1AX1
3. Inverter 1.5kw, 4A, motion control, +SBR2+CBP2+SLB Siemens 6SE7014–0TP50+ZC33+G91+G42
4. Inverter 1.5kw, 4A, motion control, +SBR2+CBP2+SLB Siemens 6SE7014–0TP50+ZC33+G91+G42
5. Inverter 4kw, 10.2A, motion control, +SBR2+CBP2 Siemens 6SE7021–3TP50+ZC33+G91
6. Inverter 7.5 kw, 17.5 A, vector, + CBP2+SLB Siemens 6SE7021-8TP60+ZG91+G42
7. Inverter 18.5 kw, 37.5 A, vector, +CBP2+SLB Siemens 6SE7023-8TP60+ZG91+G42

We want to send fast setpoints from the plc to the inverters every 2 ms.
Ø Is it possible to do this by using OB35 with execution time 2 ms, and in the OB35 use direct access to the masterdrive peripheral i/o’s?
example:
L MD 350
T PQD 200

Ø Will this send the setpoint to the masterdrive every 2 ms?
Ø How much time does the “Load” and “Transfer” need to be executed?

Thanks
 

Similar Topics

Hi, I'm setting up a modbus master on an S7-300. It seems to work in OB1 but not when I use it in OB35. Does anyone have any ideas why? Could...
Replies
10
Views
117
We've got very fast machine whose position controlled by interrupt OB35 set at 2ms. For position reading we use Temposonic connected to TM...
Replies
19
Views
2,560
Ok, curiosity has gotten the better of me. I have some code I'm working on written by others, an I've spotted this. I am not sure the reasoning...
Replies
13
Views
2,618
Hello there Wizards, I spent sometime browsing older posts before posting these questions on what appears to be an old subject & classic problem...
Replies
2
Views
3,460
Hi dears, when I calculate TIME VALUE in OB35 and set it in OB1,although the TIME VALUE number sets on the following timer,the timer doesnt run...
Replies
20
Views
6,639
Back
Top Bottom