Festo MPA Série Guide Rapide page 23

3.3 Address assignment
Before connecting to the AS−Interface bus: assign an
unused address to each slave.
Note
Valve terminal type VMPA−ASI−...−8E8A−Z contains two
AS−Interface slaves. The valve terminal behaves on the
AS−Interface bus like two individual valve terminals
each with 4 inputs and 4 outputs.
Permitted address range for each slave: 1
(factory settings: 1 for slave 1, 2 for slave 2).
It is not necessary to parametrize the AS−Interface
slaves.
Address both slaves one after the other at the plug AS−i
In" (see section 3.5).
Warning
Never assign the same address to both slaves.
The assignment of the data bits to the inputs and outputs of
both independent slaves is shown in the following diagram.
Data bits:
Inputs:
Outputs:
I/O = Bidirectional (B)
The address mapping depends on the configuration of the
master.
Festo VMPA−ASI−EPL−...−8E8A−Z 0705NH English
Slave 1: IO code 7
D0 D1 D2 D3
I/O I/O I/O I/O
I0 I1 I2 I3
O0 O1 O2 O3
Slave 2: IO code 7
H
D0 D1 D2 D3
I/O I/O I/O I/O
I4 I5
O4 O5 O6 O7
31
H
I6 I7
23