Motorola ACE3600 to A-B drive


Thread Starter

Fred Chwalek

Motorola ACE3600 communicating to two (2) A-B Powerflex 753 w/RS-485 DF1 (20-COMM-S) adapters. Only the card set to address 1 will communicate. The card addressed as 2 will not communicate. Can swap cards, set either card as address 1, and both work as address 1 but not 2. Can swap cards on drives and only the card set to address 1 will communicate. Set address with switches or software, only address 1 will communicate. Swap cables, same thing. Terminating jumper is installed correctly. Any ideas?
Data rate switch set to PGM on both drives and parameter 3 set to 1 and 2 respectively.

We have tried different combinations of switch and parameter settings. At one time this worked but something has changed and I can't put my finger on it.