IFC Networking—Serial Interface Board (SIB-NET) 15
6 5 4 3 2 1
6 5 4 3 2 1
P 2
P 1
P 3
P 1 0
P 6
P 7
P 5
P 4
A M G -1
P 5
P 3
P 4
P 2
P 4
P 3
P 5
C P U -2020 /C P U -2
TB 1
TB 2
TB 1
TB 2
A C M -16AT
A C M -32A
P 9P 8
1 20 oh m s,
1 /4 w att
S IB -N E T
s ib n e t1 2
E IA -48 5 circuit cha ra cteristic im p ed an ce o f tw iste d
p air w iring sho u ld be app roxim a te ly 1 20 o hm s.
In (U p )
O ut (D o w n)
S w 1
Figure 7: EIA-485 to SIB-NET Connections
Note: If the SIB-NET is not the first device on the EIA-485 circuit,
set SW1 on the SIB-NET to the out position. See Installing the
IFC-1010/2020 Technical Bulletin (LIT-448155).
