ABB Advant Controller 80 User Manual

AC 80 User’s Manual 4-35
Control of the
Special I/O Link
The Special I/O link is a DDCS-protocol fibre optic ring that can contain
up to eight I/O devices. The sequence of the devices determines the
node numbers as shown below.
Figure 4-32 The Special I/O link.
The terminal values of the I/O devices are accessed by the application
program through PC and DB elements. Also note that the system
software package of the AC 80 includes type circuits for handling
Special I/O devices. For detailed information, refer to the
AC 80
PC Elements Reference Manual.
CH3
CH0
CH1
CH2
NBIO-31
DEVICE 1
(node 1)
NPCT-01
DEVICE 2
(node 2)
NBIO-21
DEVICE 3
(node 3)
DEVICE 4
(node 4)
DEVICE 5
(node 5)
DEVICE 6
(node 6)
DEVICE 7
(node 7)
DEVICE 8
(node 8)
AC 80 (NCB Board)
NDSC-01

ABB Advant Controller 80 Specifications

General

Brand	ABB
Model	Advant Controller 80
Category	Controller
Language	English