24 2TLC172001M0211_A
4.6 AS-Interface bus (AS-i)
Only for Pluto AS-i and B42 AS-i
As can be seen in the I/O overview Pluto AS-i has only 8 digital I/O but is equipped with
connection for AS-i bus. AS-i is a standardised industrial bus where both power and data is
transmitted via a two-wire cable. There are two organisations for the standardisation of AS-i,
AS-International Association for the general specification and the consortium “Safety At Work”
(SAW) for the safety protocol.
This manual does only explain how Pluto AS-i can be used. General information about the AS-i
bus is available at http://www.as-interface.net/, and in literature as “AS-Interface, The
Automation Solution”.
4.6.1 AS-i connection
It is recommended to only use two of the four AS-i terminals on Pluto. Connect all AS-i + wires
to the same AS-i + terminal, and all AS-i – wires to the same AS-i – terminal. (If all four
connections are used, the AS-i circuit will be broken when the terminal block is detached,)
Pluto Bus
(To other Pluto units)
Pluto
Safety
E-stop
Bus Master /
Monitor only /
Monitor/slave
Q2I6 IQ10
Q3I Q11I7I5
I3I1C H
I2C L I0 I4
+24VID 0VIQ17IQ15IQ13
IQ12 IQ14 IQ16 Q0 Q1
PLU TO
K
Q2I6 IQ 10
Q3IQ11I7I5
I3I1C H
I2C L I0 I4
+24VID 0VI Q17IQ15IQ13
(30VDC)
External master
(Optional)
Pluto AS-i
AS-i bus
1-channel
Safety
module
Safety
switch
2-channel
Safety
module
Safety
light curtain
Non-safe
standard
slave
max
4in/4out
Non-safe
extended
slaves (A/B)
max
4in/3out
A
B
AS-i
Power
IQ12 IQ14 IQ16 Q0
Q1
PLUTO
K
Pluto on AS-i bus with some examples of AS-i slave types.
(Note: For old Pluto AS-i, of version 1, extended non-safety slaves can only be handled in” Monitor only”
mode)
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