|
 |
| Item |
Specification |
| Open system |
Yes |
| International Standard |
EN50295, IEC62026-2 |
| China National Standard |
GB/T 18858.2 |
| Bus access procedure |
Master-Slave with cyclical polling |
| Safety related signals |
Defined (AS-Interface Safety at Work), Products aveilable |
| Topology |
Line, Star, Tree, Ring |
| Number of slaves |
max. 31 slaves with standard slave
max. 62 slaves with A/B slave
max. 31 slaves with analog slave |
Number of binary
sensors/actuators
|
max. 124 inputs / 124 outputs
|
modules according to spec. V2.0 |
max. 248 inputs / 186 outputs
|
modules according to spec. V2.1 |
|
| Bus cable |
Not twisted, non shielded and not terminated cable with 2 conductors for data and power |
| Connection to cable |
Piercing, Screw |
| Cable length |
100 m, extendable via Repeater up to 300m |
| Coding |
APM ( alternating pulse modulation ) |
| Cycle time |
max. 5ms with 31 slaves
max. 10ms with 62 slaves |
| Addressing |
with addressing unit |
| Protection Class |
IP65/67, IP40, IP20 |
|
The AS-Interface has many advantages compared with conventional solutions:
| • |
no I/O cards necessary |
| • |
simple and cheap set-up of the network and the distribution through modules
(replacing the "trunk" and the "branches" of the cable tree) |
| • |
no switch cabinet volume, cable duct, distribution clamps, multiple connectors |
| • |
comparatively minor planning work needed |
| • |
simple documentation |
| • |
simple addition of periphery compared with more complex systems |
| • |
easy installation check |
| • |
rapid start-up |
| • |
scope for updating and modifying product and manufacturing changes easily and flexibly. |
Using the AS-Interface means a potential saving of up to 40 percent! |
