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FPΣ (Sigma) S-Link Expansion Unit
Flexible wire-saving link system S-Link
S-LINK unit
Features
Up to four S-Link units can be attached to one FPΣ (Sigma) CPU.
Each unit supports up to 128 I/O signals over a pair of wires up to a distance of 200m
(400m when a booster is used).
The combination of input and output point quantities (a total of 128 points max.) can be set by
the rotary switch in increments of 32 points.
The transmission line connection is realized via a T-branch multi-drop wiring with hook-up
connectors. Adding devices is rendered easy and maintenance is easy.
FPΣ (Sigma) + S-Link unit
FPG-SL
Features
The four-wire cable (two signal wires and two power
wires) enables efficient wiring, and the T-branch wirinig
enables a flexible connection layout.
About 60 types of S-Link input/output devices can be
connected to this unit, enabling it to meet diverse I/O
needs. In addition, the high transmission voltage
(24VDC) and the wide clock width (35µs) provide high
noise immunity. Flexible and reliable wiring is available,
reducing the wiring work.
Features
The control unit automatically recognizes I/O allocation in accordance with the attached S-Link unit
position, making the S-Link unit as easy to use as a common expansion I/O device.
If the main wire is broken and an input/output device cannot be recognized, then the S-Link unit displays
the device number. This function significantly reduces the time required for troubleshooting during an
equipment startup check or recovering from on-site problems.
Transmission method Bi-directional time-divided multiple signal transmission
Synchronization Bit synchronization, frame synchronization
Transmission protocol S-Link protocol
Transmission line Exclusive flat cable or cabtyre cable
Transmission speed 28.5 kbps
Transmission distance *
1
Main signal wires: Extensible up to 200m (400m when a booster is used)
Connection method T-branch multi-drop wiring or multi-drop wiring
Number of I/O points 128 points max. (adjustable in encrements of 32 I/O points)
*
1 For broosters, see the S-Link catalog and manual issued by SUNX Limited.
Specifications
35 μs
DC
24 V
20060227_FP_Sigma.qxd 20.02.2006 15:16 Uhr Seite 14
02/2006