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Dear all,
We have a SPM with 840D sl controller, from last few days we are facing a problem of tool magazine, whenever the tool change command appear in the program the m/c stops there without giving any alarm.

In the program they have some GUD variable

N425 vmSpiCltActPos = imScoActPos ; Spindelspannzange aktuelle Position
(This vmSpiCltActPos is a GUD variable)

we checked the MMAC.DEF prog and found
N265 DEFINE imScoActPos AS $A_DBW[122] ; Spindelspannzange aktuelle Position

My question is how can i get to know from where this $A_DBW[122] is getting on in the PLC and what is the DB address.

Please Help.

Regards

Anjan Mahanty