Siemens SIMOVERT MASTERDRIVES Manual page 403

Communication / PROFIBUS
Gx_XIST2 Meaning
7 Terminate collect
measured value
8 Terminate absolute
value transmission
on
A Error in reading
absolute track of the
absolute value
encoder (EnDat-
encoder)
Boundary
conditions and rules
for connection of
encoder 1 (Motor
encoder)
Boundary
conditions and rules
for connection of
encoder 2 (External
encoder)
8.2-116
Possible causes / description
• Valid measured value lacking (B0070 or B0071)
• Acknowledge encoder error active
• Parking encoder/axis active
• Request absolute value cyclically active
• Set/shift reference point active
• Mode (BIT7=0) Reference marks search active
• or a reserved bit is used
• EnDat-encoder (Multiturn) not usable
parameter P183 is not set to xxx2 enable position recording
with Multiturn.
• Fault F051
See r949 x30...x60
0xx: Motor encoder
1xx: External encoder
Table 8.2-19 Error code in Gx_XIST2
The following boundary conditions and rules exist:
1. The function "Referencing only with rough pulse" is not supported in
the standard interconnections. For this measurement via the
measured value memory of the basic unit must be used. If the
measured value memory is to be used both for referencing and for
measurement, corresponding interconnections in the basis unit via
free blocks must be used.
2. The function "Referencing only with zero mark" must be ensured via
corresponding interconnections in the basic unit using B931 "Trigger
rough pulse motor encoder".
In this a rough pulse is produced as soon as the release of the
reference point recording is switched to enabled. The next zero pulse
is then recognized.
1. The functions "Referencing" and "Measured value memory" is only
supported by the SBP (pulse encoder board) . For this the measured
value memory should be used via direct input to the SBP (see
function diagram 335).
2. The rough pulse in the external encoder is only evaluated directly on
the encoder board (see function diagram 255).
3. The "Referencing" function with zero mark only is not supported.
Encoder fault SSI/EnDat
6SE7087-6QX70 (Version AG)
Compendium Motion Control
05.2006
Siemens AG
SIMOVERT MASTERDRIVES