Yes, The left most slot of the rack is reserved for the power supply. The next slot is considered slot 0 and it is reserved for the CPU.
The remaining slots numbered 1 - 11 (BMXXBP1200) can be used for I/O modules. Any module in any slot.
Legacy KB System (APS) Data: RESL187213 V1.0, Originally authored by DaSo on 07/23/2007, Last Edited by DaSo on 07/23/2007
Related ranges: Modicon M340