AS-I SAW Bus System: Actuator Sensor Interface Safety at Work
AS-Interface SAW other wise known as Actuator Sensor Interface Safety At Work, is a Flexible, Simple
and Efficient way to wire all your Inputs (Safety Switches, Limit Switches, ...) and Outputs (Solenoids,
Stack Lights, LEDs, ...) let them be safe, non safe or even both back to your PLC, without affecting your
safety category.
Two Copper Conductors that transmit the entire buss’s Power and Data, connect all your Safety Switches, Limit Switches,
Proximity Switches, Stack lights, Light Curtains, Scanners, Pushbuttons, etc... in series back to a Programmable
Safety Monitor. The Safety Monitor is programmed using the ASiMon program; ASiMon a simple yet valuable Drag
and Drop program that take care of the logic for all your Safety Devices on the AS-I SAW bus.
All the Information on the AS-I SAW bus is collected by the Master AKA Scanner AKA Gateway and dumped
onto the upper bus System; let it be Profibus, DeviceNet, EtherNet/IP, … The information collected
by the master consists of the Status of every device connected on the AS-I bus system. Hence the
Gateway is a Mediator in both directions between the PLC and rest of the Devices on the AS-I SAW bus.
AS-I SAW offers great diagnostic capability in it's capability of doing in depth diagnostics of all the safe and non safe Devices connected to it, some features:
- Disconnecting a switch off the bus system, you can easily know which switch was disconnected.
- If a device on the bus system fails, you are able to diagnose which one has.
- ...
All the diagnostics is achieved through the two copper conductors, talk about Efficiency and Flexibility. AS-I SAW is a
low level bus system that enables you to communicate all your bit level devices in a Fast, Efficient, and
Flexible Method.
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