ABB MD21 - Soft Selector Switch Via Profibus DP; Local Selector Switch

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50 Enable PROFIBUS option
Soft selector switch via Profibus DP
Once the 'Profibus Auto Mode Active' option is se-
lected through parameter configuration, the con-
trol access is decided by the auto bit through
Profibus cyclical data exchange.
MDx control can be pre-assigned to either local con-
trol or remote control. (Fig 50)
Local selector switch
M10x supports hardwired local selector switch
function which allows selecting control
access groups via hardwired inputs. To enable
this function, one of the digital inputs has to be
defined as ‘Loc/R’ in M10x (Fig. 51).
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51 Enable local selector switch
When “Loc/R” selector switch func-
tion is assigned to the DI, soft selector
option is no longer available.
62 M OTO R CO NTRO L A N D PROTE C TI O N U N IT M10X USER G U I D E