Hey Richard, I did found some notes on this issue I had. My setup was 525 as master and 4M drives as daisy chain slaves. My problem was in setting the correct parameters. I attached a word file that has snippets from the manual for correct settings.
On 525 master:
C169[Multidrive Ad] 2 Ethernet IP
C171 Drv1 adr 1
C172 Drv2 adr 2
C173 Drv3 adr 3
C174 Drv4 adr 4
C175 drive number 4