I want to use PLC5 to communicate with flex IO, using RIO. Before I proceed I want to clarify my confusion about the addressing scheme, as I am not acquainted whatsoever to it. I have read the reply by RON in the thread below but I just wanted to see if I'm on the right page.
http://www.plctalk.net/qanda/showthread.php?t=76624
Lets say the flex chassis contains 8 1794-IB32.
Given that there are 8 32bit modules, which of the two is correct?
1. 8 BTR instructions addressed to a single rack, groups 0-7.
2. 4 BTR instructions addressed to rack 1, groups 0,2,4 and 6. 4 BTR instructions addressed to rack 2, groups 0,2,4 and 6.
Furthermore should the BTR length be 2 (32bits)?
Also is the group parameter in generic block transfer referring to the starting group? So for a scenario like the one attached I'd be reading from group 1-5?
Lastly, given that a rack contains 8 groups, what happens if the length exceeds 8, will it read to the next logical rack?
Any help will be greatly appreciated
http://www.plctalk.net/qanda/showthread.php?t=76624
Lets say the flex chassis contains 8 1794-IB32.
Given that there are 8 32bit modules, which of the two is correct?
1. 8 BTR instructions addressed to a single rack, groups 0-7.
2. 4 BTR instructions addressed to rack 1, groups 0,2,4 and 6. 4 BTR instructions addressed to rack 2, groups 0,2,4 and 6.
Furthermore should the BTR length be 2 (32bits)?
Also is the group parameter in generic block transfer referring to the starting group? So for a scenario like the one attached I'd be reading from group 1-5?
Lastly, given that a rack contains 8 groups, what happens if the length exceeds 8, will it read to the next logical rack?
Any help will be greatly appreciated