1747sn to 1794 flexio 32bit config problems

Hi,
I am trying to get some flexi IO communicating.
The scanner has its steady green light on The G file is all the default values.The first two green lights are working on the 1794 module. So I think they are communicating to each other.
In the 1794 module all S1 switches are on
s2-3 and s2-4 are off all the rest are on
I have a 32 input module and a 32output module connected to the 1794.respectively
I am using a basic BTR trying to get data from the 1794
The BTR is setup as follows
Rack 0
Group 0
slot 0
control block N7:10
Data file n7:20
Buffer M1:1:100
Req word count 1
Transmitted
control block lenght 3

When I set the rung true after approx 4 secs I get -9 in the transmitted line.

After we sort out this basic problem if I cahngwe req word count to 2 will that return inputs 0 -32?

Thanks
Mike

With Flex I/O, the meaning of some of the dipswitches has been changed by A/B more than once. Be very sure your dipswitch settings are correct for the exact revision of your 1794-ASB.