New Remote I/O Rack in PLC5/80

Hi, i need help,

i have a plc 5/80c 1.5 and the i/o config is:

Local chassis (4 slots) onnly the processor
and also 4 chassis each (16 slots) and ASB series E



Can i add one more 16 slots chassis with ASB series E with span 24/0-27/7 (starting rack 24)?

Is able to have 5 remote i/o racks?


thanks

also all chassis are 1/2 slot adrressing