Controllers / Gateways,network extension

System description Master according to the AS-i specification 2.1 By now there are masters in addition to the tried and tested AS-i specifica-tion 2.0 masters, e.g. the Controller e family with AS-i 2.1. The mostimportant common feature of these two variants is their full compatibility.New AS-i functions have been implemented in version 2.1, these can how- ever only be used with 2.1 slaves. All 2.0 slaves can be perfectly operated from 2.1 masters. Vice versa, pure data communication is only downward compatible. All other functions can however not be evaluated by the 2.0 master. The correlation is demonstrated in the following table.The slave profile of the AS-i specification 2.0 consisted of 2 positions (e.g.S.7.0). In specification 2.1 these have been complemented by further ID codes (e.g. S-7.A.E). These codes can also only be evaluated by masters type 2.1. The “missing” third position in older slaves is filled up with the value “F” (hex).

AS-i slave-specification Function Master 2.0M0, M1, M2 profiles Master 2.1M3 profile Master 3.0M4 profile Compatibility ofmaster and slaves. 2.0slaves without extend-ed addressing mode31 slaves31 slaves 31 slaves analogue slaves withthe profile S-7.1or S-7.2 2.0 with function block with function block2.1 + 3.0slaves without extend-ed addressing mode31 slaves31 slaves with function block31 slaves 2.1 + 3.0 slaves with extendedaddressing mode 31 slaves (Aslaves) 62 slaves (Aand Bslaves)2.1 + 3.0peripheral faultsnot evaluatedyes 62 slavesyes analogue slaves withthe profile S-7.3.x or S-7.4.x 2.1 + 3.0 possibly with function block directly connectable, without function block directly connectable,without function block3.0slaves withspecial functions, e.g. serial data transmissionpossibly withfunction blockpossibly withfunction blockdirectly connectable,without function block

Commissioning of the master The AS-i system is designed as a self configuring system, it can thus be com-missioned without software. As the data quantity is fixed to 4 bits per AS-i slave the master can read a connected network and permanently save it as preset configuration (LPS, list of projected slaves). This can be done without any software. For this reason a lot of masters feature only one pushbutton “Config all” or a convenient display which also allows addressing of the slaves. Visit our website: www.ifm-electronic.com

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