VS18/VS26
MAINTENANCE & INSTRUCTION BOOKLET
8.5 I
NTERBUS
-S
Norgren Interbus-S Fieldbus systems conform to DIN19258.
Communication system:
4-wire RS422 hardware
communication protocol
Number of nodes per network:
512 nodes including
remote slaves
Total number of I/O per network:
4096
Bus topology:
Ring
Note:
•
VS18/VS26 Interbus-S valve islands are intended for connection to the Interbus-S remote
bus system only.
•
The valve island must be mounted on an earthed base to meet the EMC directives.
8.5.1 Interbus-S pin assignment
Male D-Sub 9-pin (IP65)
Female D-Sub 9-pin (IP65)
Pin no.
Function
Pin no.
Function
1 DO
1 DO
2 DI
2 DI
3 0VI
3 0VI
4 -
4 -
5 -
5 -
6 /DO
6 /DO
7 /DI
7 /DI
8 -
8 -
9 -
9 -
The VS18/VS26 Interbus-S valve islands do automatically recognize whether an additional
device is connected on the outgoing connector or not. It is not necessary to add a bridge
between pin 5 and pin 9.
Male
Female
Communication in
Communication out
Looking into node connector
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