I am using an M40 module in a project, where I want to test whether the SPI communication works, roughly, so I just want to check that the Anybus object reports the correct module type (instance #1, attribute #1). After reading the software design guide, I understood that in the SPI frame, the
WrMsgField words are supposed to contain the message layout described in Section 10.2 of the software design guide. Firstly, is that correct, and is that a correct approach to test our that the Anybus object reports the correct module type?
If it is, I don’t understand how words 5,6 and 7 of the message layout should specify the source within the Anybus Object model. Since I want to check attribute #1 of instance #1 of AnybusObject 01h, should the 5th, 6th and 7th words all be 01h?