1. Aktuator-Senzor-Interface
AS- Interface
„Enostavno in poceni!“
november, 00

2. Na katerem nivoju lahko uporabimo AS-Interface?
Nivo proizv.
obrata
Tehnološki
oddelek
Stroji,
naprave
Aktuator-
Senzor-
nivo
Delovne postaje
, PC
PLC, PC
Pogoni
Ventili
Aktuatorji
Senzorji
center of automation pyramid: control equipment and devices of a fairly complex nature (PLCs and PCs, variable speed drives, valves, I/O blocks)
data volumes of a few bytes to a few hundred bytes
response times are measured in the “near real time” dimensions
==> level identified as field level
november, 00

3. Osnovne lastnosti AS-Interface ...
master-slave princip
do 31 slave enot na eno linijo
vsaka Slave enota ima lahko do diskret. vhode + 4 diskr. izhode
dodatni 4 parameterični biti / slave
Max. 248 diskret. vhodov in izhodov
tudi možno: analogni I/O !!!
Avtomatsko oštevilčenje naslovov
neoklopljen 2-žični kabel
podatki in napajanje po enem kablu
max. Dolžina linije: 100 m (300 m z repeaterji )
ne potrebujemo zaključitvenih uporov
neomejena drevesna topologija omrežja
stopnja zaščite do IP67,
čas cikla < 5 ms
AS-Interface transmits 4 data bits for inputs and for outputs to each slave in each cycle. In addition is able to send 4 parameter bits for one slave in each cycle.
You can use these parameter bits for example to set remote values of intelligent slaves.
Even analogue modules (e.g. modules with analogue inputs or outputs) can be connected to an AS-Interface network. In this case you have to use special software in the control unit. The use of analogue signals is limited for relatively slow varying quantities like temperature or pressure.
Normally information and energy are transmitted on the same (yellow) cable. For circuits with emergency shut-off, or if the slave needs more power, you can use an additional power supply with a separate cable (black for DC or red for AC), both of which use the same simple connection system.
Most emergency stop systems need to know the correct position of the machine’s components (detected by sensors) in order to restart the machine. With an additional power supply, only the main power to the actuators has to be switched off in an emergency via the black cable. The network itself and the sensor power supply need not be switched off.
november, 00 14

4. Y S A E Zakaj AS-Interface?
Enostaven in cenen Podatki in napajanje po enem kablu Preprosta inštalacija - rokovanje
Plug & Play Zagon brez Projektiranja Zamenjava Slave enot brez Projektiranja
Velika hitrost Kratki časi ciklov, Realni čas
Zanesljivost Nenehna kontrola priključenih Aktuatorjev/Sensorjev
Neodvisnost od proizvajalcev Veliko število naprav različnih proizvajalcev, ki se lahko priključijo
november, 00

5. Kaj je AS-Interface? Standard: IEC Specifikacija IEC TG 178
Komunikacija za diskretne Senzorje in Aktuatorje
Determiniran čas cikla, največ 5 ms
Gradnja v poljubni linijski ali drevesni strukturi
Visoka stopnja zaščite
Neodvisen od proizvajalcev Standardiziran, na pobudo AS-International Association
PROFIBUS defines technical + functional characteristics of a serial fieldbus, which interconnects distributed digital field devices
w/ FMS and DP ==> complementary services for both control and I/O devices
FMS: services offer a wide range of functionality and flexibility: (extensive communication tasks like peer to peer) German standard DIN p.1+p. 2 since 1990
DP: performance optimized version of PROFIBUS, specifically dedicated to time critical communication among automation systems and distributed peripherals ==> replacement for costly parallel wiring of 24V and mA measurement signals (German draft standard p.3 since 1993)
PA: process automation: utilizes transmission technique specified in IEC and permits intrinsic safety + bus powered stations (results of ISP adapted by PNO)
november, 00

6. Podpira ga veliko število proizvajalcev & odprt Standard
AS-International
Podpira ga veliko število
proizvajalcev & odprt Standard
Pridruženi člani:
Allen Bradley
Banner Eng. Co
Carlo Gavazzi AG
Datalogic Prod. GmbH
Eaton Corporation
Endress & Hauser
Groupe Schneider SA
Honeywell
Itec
Lumberg GmbH & Co
Omron Electronics Europe
Ustanovitelji:
Festo KG
ifm Efector
Leuze electronic GmbH & Co
Pepperl + Fuchs GmbH
Erwin Sick GmbH
Siemens AG
Turck GmbH & Co KG
...
november, 00

7. Katere prednosti prinaša AS-Interface?
Enostavna in poceni priključitev diskretnih Aktuatorjev/Senzorjev
Avtomatična vzpostavitev povezave s Slave-i
Podatki in napajanje preko enega kabla
Test- in Diagnostika
Povezava na PROFIBUS
november, 00

8. Pregled prednosti AS-Interface-a
Preprosto, ceneno ožičenje
Avtomatska povezava Slave priključkov
Povezava na PROFIBUS
Podatki in napajanje po enem kablu
Test- in diagnostika
november, 00

9. Tehnični podatki za AS-Interface
Standard AS-Interface-Specifikacija IEC TG 178
Dostop Master-Slave (determinističen)
Čas cikla 5 ms pri 31 Slave-ih
Prenosni medij neoklopljen dvožični profilni vodnik
Max. št. priključkov 31 Slave enot (max. 4 diskretni elementi na Slave)
Velikost mreže Dolžina vodnika največ 300 m (z Repeaterji)
Topologija Linija, drevo, zvezda, obroč
Uporaba Aktuator-Senzor-Nivo Težišče: diskretni Sensorji in Aktuatorji
november, 00

10. Enostavna izvedba ožičenja ...
Profilni ploščati kabel - dve žici za prenos podatkov in napajanje
Konektorji, ki prebodejo izolacijo - enostavno in varno - stopnja zaščite do IP67,
Ploščati kabel
s profilom
Konektor prebode
kabel
Ohišje Slave
enote
november, 00 5

11. AS-Interface slave modul za priključitev diskretnih
senzorjev in aktuatorjev:
D0 = senzor 1
D1 = senzor 2
D2 = aktuator 1
D3 = aktuator 2 P0
Do 4 senzorji
in/ali
4 aktuatorji
napajanje
AS-Interface Slave IC
Ohišje
slave enote
povezava
Watchdog
With AS-Interface you have “modules” to connect conventional sensors and actuators the network.
The figure shows schematically a 2I/2O module. It contains an AS-Interface IC which gets the switching signal from (in this case) 2 sensors and sends the switching signal to 2 actuators.
Up to 4 input and 4 output signals are possible in bi-directional modules (up to 248 binary signals in one net).
Plants are mostly constructed with modules, if cost reduction in planning, installation, commissoning and documentation are the primary point of view.
november, 00 6

12. in dvema pnevmatskima izhodoma
AS-Interface slave modul za priključitev diskretnih
senzorjev in aktuatorjev (izgled):
Slave modul z 8 vhodi
With AS-Interface you have “modules” to connect conventional sensors and actuators the network.
The figure shows schematically a 2I/2O module. It contains an AS-Interface IC which gets the switching signal from (in this case) 2 sensors and sends the switching signal to 2 actuators.
Up to 4 input and 4 output signals are possible in bi-directional modules (up to 248 binary signals in one net).
Plants are mostly constructed with modules, if cost reduction in planning, installation, commissoning and documentation are the primary point of view.
Slave modul z 2 vhodoma
in dvema pnevmatskima izhodoma
november, 00 6

13. Očitna prednost Klasično ožičenje AS - Interface !!!
Nadomestitev množice kablov z AS-Interface
Klasično ožičenje
AS - Interface !!!
november, 00

14. Ožičenje izvedeno z AS -Interface
AS-Interface: Nova tehnologija izvedbe ožičenja
Master
AS-Interfaces changes the installation technology:
PLC with AS-Interface master instead of I/O-cards,
no or reduced service cabinets: therefore lower demand on space
2-wire cable instead of a cable tree: therefore less material, less space requirements for cabling, more transparent wiring
piercing technology: therefore no de-manteling of the insulation, no mounting of sockets, etc.
modules, slaves and branching components in IP67: therefore no terminal boxes, reduced numbering of cables and wires
simple documentation
Klasično ožičenje
Ožičenje izvedeno z AS -Interface
november, 00 4

15. Prosta izbira mrežne topologije
ZVEZDA LINIJA LINIJA Z VEJAMI DREVO
AS-Interface has tree-structure. It allows to adjust the wiring to the needs of the machine or plant. The slave have not to be put on a line or in a circle. The cables don’t need a terminating resistor.
The maximum length is 100 m, including all cable pieces.
Networks with more than 100 m can be built wih repeater. Up to 2 repeaters can be used in series (300 m). Several parallel branches may use repeaters.
A large distance between a master and the rest of the network can be overcome by an extender, its max. distance depending on its working principle.
november, 00 8

16. Priključitev nove slave enote kjerkoli
Kasnejše dograjevanje
Priključitev nove slave enote kjerkoli
simple !
Dodana nova veja
Slave
Slave
Slave
Due to the tree-structure and the individuell addresses new slaves or a complete new branch may be introduced into the system at any time.
Configuring the changed system is the job of the master!
Slave
Slave
november, 00 9

17. AS-Interface Napajalnik AS-Interface razdelilec
Primer Aplikacije
SIMATIC S7 300
AS-Interface Napajalnik
CP 342-2
Pasivni Modul
Aktivni Modul
Aktuator/Senzor
AS-Interface razdelilec
AS-Interface Slave-ASIC
AS-Interface Buskabel
november, 00

18. Uporaba Repeaterja Master max. 100 m max. 100 m
AS-Interface- Napajanje
AS-Interface- Napajanje
Repeater
november, 00

19. Uporaba Extenderja Master max. 100 m max. 100 m
AS-Interface- napajanje
Extender
november, 00

20. APM- Alternating pulse modulation
november, 00

21. Programska oprema ASimon
Funkcije Asimona:
vpis nove konfiguracije sistema (določitev AS-i naslova varnostnemu monitorju)
vpis konfiguracije AS-i omrežja (kateri Slavi so varnostne naprave)
nastavitev diagnosticiranja (diagnosticiranje preko AS-i vodila)
zagon AS-i monitorja
pisanje programa
nalaganje programov iz PC na varnostni monitor ali obratno
spremljanje statusa varnostnega monitorja
zaklepanje in odklepanje programa
izpis varnostnega protokola
Osnovno okno Asimon
november, 00

22. Naslavljanje slave enot
Območje naslovov je 01-31
Slave enote imajo vnaprej nastavljen naslov 00
Podvojeni naslovi niso dopustni
Dodeljevanje naslovov:
S pomočjo naprave za naslavljanje
Master avtomatsko dodeli naslove
november, 00

23. Naslavljanje slave enot (Simatic PLC)
n: začetni naslov
Slave 1:
I n.0
I n.1
I n.2
I n.3
Slave 2:
I (n+1).4
I (n+1).5
I (n+1). 6
I (n+1). 7
november, 00

24. Način delovanja: Master - Slave
MASTER POŠILJA
The AS-Interface system contains one master and up to 31 slaves.
Communications between master and slaves runs cyclically:
First the master sends a call to a certain slave. (for example: Hello Slave 3, please set output 2 and send me the status of your 4 data channels).
The called slave answers immediately.
After a short break the master calls up the slave with the next address. After slave 31 and one additional call the cycle is complete and starts again at slave
Unregistered addresses are skipped.
Time for one full cycle is 5 ms for a network with 31 slaves including a repeating call (which sometimes happens if the system detects an incorrect telegram).
Important for the user: The master organises the date transfer by his own firmware. There is no programming or configuring by the user. To him the master looks very much like a traditional I/O card handling input and output process images!
SLAVE ODGOVARJA
november, 00 13

25. negative puls as startbit positive puls as stopbit
Visoka zanesljivost delovanja
Vsako sporočilo - telegram se preveri z metodo paritete.
S tem se doseže visoka zanesljivost ugotavljanja napak.
Za ponovitev enega sporočila - telegrama je potrebno le 150 µs ,kar pa je že vključeno v čas cikla.
AS-Interface lahko uporabimo tudi v okolju, kjer so prisotne močne elektromagnetne motnje (varilni stroji, frekvenčni pretvorniki).
High data security is assured by checking of telegrams and signal quality:
negative puls as startbit
positive puls as stopbit
alternating puls structure
observing of pauses between two signals
observing the time dependance of the pulses
observing the amplitudes of the pulses
securing telegrams by checking the parity
timeout checking of telegram length
High availabilty of the system is assured by
a low figure of faults even under difficult conditions
repetition a single teltgram only (in case of a fault)
november, 00 15

26. AS- Interface – enostavnost, cenenost
Nizki stroški ožičenja
Visoka zanesljivost delovanja tudi v najtežjih pogojih
Omrežje, ki deluje v realnem času
Omrežje je vsestransko uporabno
Omrežje s preprosto izvedbo ožičenja
Omrežje, ki ga lahko hitro in preprosto razširimo
Znak ustreznosti ASI standardu:
november, 00 16

27. SIMATIC NET Argumenti, ki nas prepričajo...
SIMATIC NET - varna Investicija zaradi:
Visoka zanesljivost
Celoten spekter mrež
Priključitev na PROFIBUS in Industrijski Ethernet preko SIMATIC CPU-jev
Odprte mreže, odprti Protokoli
Veliko delujočih sistemov
november, 00