Sign in to follow this  
Followers 0
Bryll

ET200 S addressing I/O's

3 posts in this topic

Hello, We shall from a computer system communicate to a couple of Et200s nodes equipped with only digital inputs and outputs. The Communication is std profibus. I guess each input/output "slice" will take one byte, even if it's a four input or output unit. What is the start address for inputs ? What is the start address for outputs ?

Share this post


Link to post
Share on other sites
If I remember correctly (been a year since I did a Step 7 project) addresses are assigned in the HW configuration.

Share this post


Link to post
Share on other sites
No worries, I Think I figured it out now. The inputs and the outputs at each ET200S starts at byte 0. First digital input address is 0.0 and first digital output address is also 0.0. In the computer system do we need to specify how many READ and WRITE bytes the telegram shall consist of. So if I send a "1" to PB address 15, telegram byte 3.2, it means that output "2" of the third output module is activated. Just to install the GSD file to the computer system and get going

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0