[?]: problem in 2* s7-300 AO Redundancy

joopiter · Post by **joopiter** » Tue Jan 29, 2008 10:12 am

hello friends
I have used 2 S7-300 AO(6ES7332-5HF00-OABO) card for making them redudant,
i have two problems:
1. first one is this that when two channels are ok each one should work in half range(2-20mA)
but when one channel fail the other one should work in full range,
but this is not taking place

2. the other problem is ,when two channels are ok i have many oscillation AO in one forced value,
what should i do can any one help me?

rataman · Post by **rataman** » Wed Jan 30, 2008 12:51 am

it happened to me. Have u already check partner redundancy in HWconfig? Are you using CFC?

joopiter · Post by **joopiter** » Wed Jan 30, 2008 4:53 am

yes hw config is ok,and i use CFC

rataman · Post by **rataman** » Thu Jan 31, 2008 3:39 am

Then you should check your process image, all ao-ch blocks should be in the same ob and use Process image 1 on all ao modules. Check your hwconfig for that and it should work fine.