Siemens SINAMICS S120 Function Manual page 449

If the function (reference mark search or measuring probe evaluation) has still not been
completed and the corresponding input p2508 or p2509 is reset, then the function is
interrupted via the encoder control word and status bit r2526.1 (reference function active) is
reset via the encoder status word.
If both binector inputs p2508 and p2509 are simultaneously set, this causes the active
function to be interrupted and no function is started. This is indicated using alarm A07495
"reference function interrupted" and remains until the signals at the binector inputs are reset.
The alarm is also generated if, during an activated function (reference mark search or
measuring probe evaluation) a fault is signaled using the encoder status word.
If the "position control" function module is selected, these parameters (p2508 to p2511) are
preassigned with "0". If the "basic positioner" function module is selected, the functions
"reference mark search" (for the function reference point search) and "measuring probe
evaluation" (for the function flying referencing) are initiated by the "basic positioner" function
module and the feedback signal (r2526, r2523) is fed back to this (see also Section Control
and status words for encoder (Page 675)).
Function diagrams (see SINAMICS S120/S150 List Manual)
• 4010
• 4720
• 4730
Overview of important parameters (see SINAMICS S120/S150 List Manual)
• p2508
• p2509
• p2510
• p2511
• p2517[0...2]
• p2518[0...2]
• r2523[0...3]
• r2526.0...9
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Position control - Actual position value processing (r0108.3 = 1)
Encoder evaluation - Encoder interface, receive signals, encoders 1 ... 3
Encoder evaluation - Encoder interface, send signals, encoders 1 ... 3
BI: LR activate reference mark search
BI: LR activate measuring probe evaluation
BI: LR measuring probe evaluation, selection
BI: LR measuring probe evaluation edge
LR direct probe 1
LR direct probe 2
CO: LR measured value
CO/BO: LR status word
Function modules
7.7 Closed-loop position control
447