Filter
Top Products
Configuration rules
When you set up your expansion unit, observe the rules in Table 4.
Table 4. Configuration rules
System or expansion unit Configuration rules
General
v When connecting HSL cables from the system unit to an
expansion unit:
– Connect the first HSL cable between connector A0 on
the system unit (or the first available set of connectors)
and connector 0 on your expansion unit.
– Connect the last HSL cable between connector A1 on
the system unit (or the first available set of connectors)
and connector 1 on your expansion unit.
v When connecting HSL cables between expansion units:
– Connect the HSL cable to connector 1 on the first
expansion unit and to connector 0 on the next
expansion unit.
v Connect an SPCN cable from J15 on the system unit to
J15 on the expansion unit.
v Connect an SPCN cable from J16 on the expansion unit to
J15 on the next expansion unit.
5079 expansion unit
v The 5079 expansion unit counts as two 5074 expansion
units.
iSeries 820
v The 820 can have up to five expansion units in one HSL
loop.
Figure 4. Planning for redundant link with a expansion unit and 5078
Chapter 1. Preparing to set up your 5074 or 5079 Expansion Unit 5