·368·
Installation manual
CNC 8055
CNC 8055i
7.
CONCEPTS
SOFT: V02.2X
Axes (2) controlled by a single drive
7.13 Axes (2) controlled by a single drive
To control 2 axes through a single servo drive:
• Set axis parameters SWITCHAX (P65) and SWINBACK (P66).
• Act upon marks SWITCH1 through 7 corresponding to the secondary axis for selecting the axis
to be governed. "0" for the main axis and "1" for the secondary.
• Since the turning direction of the two axes may be different, indicate the sign of the velocity
command in parameter LOOPCHG (P26) of both parameters.
When communication is via Sercos, proceed as follows:
• The axis parameters SERCOSID for both axes must be set with the same value (same Sercos
address).
• To govern one of the axes, enable the SERVOON, SPENA and DRENA signals of that axis and
activate the DRO signal of the other axis so it works as a DRO (not controlled).
X and Z paraxial axes (moving one at a time) and independent
feedback.
The velocity command is always output through the X axis connector (main).
The mark for the secondary axis is SWITCH2 (M5155).
With SWITCH2=0 , velocity command of the X axis and with SWITCH2=1 that of the Z axis.
Main axis Associated axis
SWITCHAX 0 Code of the main axis.
SWINBACK 0 ·0· If it assumes the feedback of the main axis.
·1· if it has its own feedback.
X axis (main) Z axis (secondary)
SWITCHAX for X = 0 SWITCHAX for Z axis = 1 (X axis)
SWINBACK for X axis = 0 SWINBACK for Z axis = 1
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