03.2010
6SE7087-6QX70 (Version AL) Siemens AG
28
Compendium Motion Control
SIMOVERT MASTERDRIVES
Number / Alarm
Cause
Counter-measure
A201
No velocity has been
programmed in
Automatic mode
The decoded NC block needs a path or axis
velocity.
Effect:
NC program execution is inhibited or aborted,
the axis is brought to a standstill via the
deceleration ramp.
When using linear interpolation with path
velocity (G01), a path velocity must be defined
with F. When using chaining with axis velocity
(G77), the axis velocities must be defined with
FX, FY, etc. When using roll feed with axis
velocity (G01), the velocity must be defined
with F.
A202
Axis unknown
An axis which does not exist was detected in
the decoded NC block. A logical name (X, Y,
Z, A, B, C) must be assigned to each axis with
machine data 2 (axis assignment). Only these
logical axis names can be used in the NC
block. These errors cannot normally occur,
since the logical axis names are verified when
the NC blocks are entered.
Exception: Machine data 2 (axis assignment)
is changed afterwards.
The NC program number and NC block
number in which the NC block decoder
detected the error can be read out with the
"output actual values – decoder error location"
task.
Effect:
NC program execution is inhibited or aborted,
the axis is brought to a standstill via the
deceleration ramp.
Correct the NC block.
A203
1st G-function not
allowed
The NC block which was read in contains an
illegal 1st G function.
The NC program number and NC block
number in which the NC block decoder
detected the error can be read out with the
"output actual values - decoder error location"
task.
Effect:
The axis movement is inhibited or stopped via
the deceleration ramp.
- MDI mode:Only G90 (absolute dimensions)
or G91 (incremental dimensions) can be
entered as the 1st G function. Only G91 is
allowed for the roll feed version.
- Automatic/single-block mode:Define a legal
1st G function according to the table (see the
Programming Guide).
A204
2nd G-function not
allowed
The NC block which was read in contains an
illegal 2nd G function.
The NC program number and NC block
number in which the NC block decoder
detected the error can be read out with the
"output actual values - decoder error location"
task.
Effect:
The axis movement is inhibited or stopped via
the deceleration ramp.
- MDI mode:Only G30 to G39 (acceleration
override) can be entered as the 2nd G
function.
- Automatic/single-block mode:Define a legal
2nd G function according to the table (see the
Programming Guide).
A205
3rd G-function not
allowed
The NC block which was read in contains an
illegal 3rd G function.
The NC program number and NC block
number in which the NC block decoder
detected the error can be read out with the
"output actual values - decoder error location"
task.
Effect:
The axis movement is inhibited or stopped via
the deceleration ramp.
- MDI mode:No 3rd G function is allowed.
- Automatic/single-block mode:Define a legal
3rd G function according to the table (see the
Programming Guide).
