MicroLogix 1400 & Yaskaws A1000

I am trying to control a Yaskawa A1000 with a MicroLogix 1400 message command. When I try to read the status I get error e0 in the message error. I am using Generic Get Attribute Single, Service Code E, Class 4, Instance 71 and Attribute 3.

I found that I needed to use the Read Assembly instead of the Generic Get Attribute Single for the service for parameters going to the comm. card.