jayfourn8

I am trying to communicate with a MicroLogix 1500 via DeviceNet. The IRC-5 Robot Controller is the master and the the 1500 is the slave. The 1769-SDN (scanner module on the 1500) gives an error 77 which means that the data table sizes do not match. I am unsure of how to decipher the size of the data tables that the ABB is looking for. I configured the PLC scanner module to 70 input words (the first 66 are read only when using the 1500 platform) and 7 output words. I try to put these values in the ABB controller and the 70 value is not allowed. I tried to just use 4 (70-66) as well but that doesnt clear my error either. I have tried many other combinations in hopes of stumbling across the right one but I dont like to work that way. I wish to understand this more clearly so it is definitive and not a guessing game. Thanks!!