Installation
Page 4-22 ABB Control - AC 31
1SBC 260400 R1001-b 06.99
Addressing rule
- The first binary input extension takes the address X+1, the following is incremented by
1 and so on until 61.
- The first binary output extension also takes the X+1 address and those that follow are
incremented by 1, up to 61.
50
series
master
IW /
OW
O IW I O I
62 63 63 64 63 64 64
ddresses
RU
I O
I
I
O O
Addresses X X+1 X+1 X+2 X+3 X+2 X+3
CS 31
bus
interface
- A mixed or configurable input/output extension is considered, for addressing, as an
input extension
and an output extension => the address of the following binary
extension, whether input or output, is incremented by 1.
None of the addresses defined by the configuration may be used by another remote unit of the
30 or 90 series. In the following example an output unit of the 30 or 90 series can not have the
address X+1 or X+2. It's address has to be greater than X+5.
RU
I I
I/O
I
O O
Addresses X X+1 X+2 X+3 X+4 X+4 X+5
50
series
master
IW /
OW
O
IW
I
O I
62 63 63 64 63 64 64 Addresses
CS 31
bus
interface
When an analog extension unit is present amongst the extensions, the unit takes the same
address value as that of the extensible remote unit to which it is associated.
Address values = ( 0 ≤ X ≤ 61 )
When an XM 06 B5 type analog extension unit is used, it is possible to associate a maximum
of two units to the extensible remote unit, because the number of inputs and outputs of this
unit is less than eight.
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