Presentation of the installation of the AS-i V2 bus

Introduction

The AS-i V2 bus (Actuator Sensor-Interface Version 2) allows the interconnection on a single cable of sensor devices/actuators at the lowest level of automation. These sensors/actuators will be defined in the documentation as slave devices.

To implement the AS-i application you need to define the physical context of the project into which it will be built (rack, power supply, processor, modules, AS-i slave devices connected to the bus) then ensure its software implementation.

The software installation of the application modules is performed from the various Control Expert editors:

in local mode,
in online mode.

The following is the recommended order of the installation phases, but it is possible to modify the order of some phases (for example start with the configuration phase).

AS-i V2 Bus

The AS-i V2 functions are built into the TSX SAY 1000 module. The AS-i bus then allows :

up to 62 standard and/or extended address slaves,

up to 248 inputs and 186 outputs,

up to 124 analog values integrated in the master AS-i,

a cycle time of 10ms maximum.

AS-i V2 bus installation principle

The following table shows the different implementation phases of the AS-i V2 :

Phase	Description	Mode
Variable Declarations	Declaration of variable of the IODDT type for the project modules and variables.	Local (1)
Programming	Programming the project and functions carried out using the AS-i V2 bus.	Local (1)
Configuring	Declaration of modules and slave devices.	Local
	Configuring the module channels.
	Entering configuration parameters.
Association	Association of IODDT’s with the configured modules (variables editor).	Local (1)
Generation	Generation (analysis and editing of links) of the project.	Local
Transfer	Transfer of the project to the PLC.	Connected
Adjust and Debug	Debugging the project from debug screens/animation tables.	Connected
Adjust and Debug	Modification of the program and the adjustment parameters.	Connected
Documentation	Building the documentation file and printing of the various information concerning the project.	Connected (1)
Operation/Diagnostics	Display of the various information necessary for conducting the project.	Connected
Operation/Diagnostics	Project and modules diagnostics.	Connected

Legend
(1)	These various phase can also be performed in the other mode.