Efficient Networks Siemens Sinamics S120 - Manual (Page 381)

Communication PROFIBUS DP/PROFINET IO
10.1 Communications according to PROFIdrive
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
381
Bit Name Signal status, description
0 No active parking encoder
1 Error from encoder or actual-value sensing is active.
Note:
The error code is stored in Gn_XACT2.
15 Encoder error
0 No error is active.
Encoder 1 actual position value 1 (G1_XACT1)
● Resolution: Encoder lines ∙ 2n
n: fine resolution, no. of bits for internal multiplication
The fine resolution is specified via p0418.
● Used to transmit the cyclic actual position value to the controller.
● The transmitted value is a relative, free-running actual value.
● Any overflows must be evaluated by the master controller.
)LQHLQIRUPDWLRQ (QFRGHUOLQHV
,QWHUQDOPXOWLSOLFDWLRQ
)DFWRU\VHWWLQJ SIRU*[B;,67 HQFRGHUWR
  %LWb
Figure 10-14 Subdivision and settings for Gx_XIST1
● Encoder lines of incremental encoder
– For encoders with sin/cos 1Vpp:
Encoder lines = no. of sinusoidal signal periods
● After power-up: Gx_XIST1 = 0
● An overflow in Gx_XIST1 must be viewed by the master controller.
● There is no modulo interpretation of Gx_XIST1 in the drive.
Encoder 1 actual position value 2 (G1_XACT2)
Different values are entered in Gx_XACT2 depending on the function.
● Priorities for Gx_XIST2
The following priorities should be considered for values in Gx_XIST2: