SEW-Eurodrive MOVIPRO Ethernet/IP - Page 237

13
Parameter setting
Parameter descriptions
Manual – MOVIPRO
®
with EtherNet/IP™ or Modbus/TCP Fieldbus Interface
237
P918 Bus setpoint source
Setting range: 0–499–1023
Sets the source for the setpoint in the IPOS
PLUS®
application module when operating
with EtherCAT
®
.
P92. IPOS monitoring
P920/P921 SW limit switch CW/CCW
The software limit switches are only monitored in IPOS
PLUS®
Operating modes.
Setting range: -(2
31
-1)–0–(2
31
-1)
Specifies the limits of the target range in the software in which the travel commands
are still accepted.
If P941 Source actual position (→2239) is set to "motor encoder" or "external en-
coder", then the software limit switches do not take effect until after performance of a
reference travel.
If the target position H492 of the current travel command is outside of the active soft-
ware limit switch, the travel command is not executed. The drive responds accordingly
to the error response set in the parameter P838 Response ’SW limit switch’
(→2226). If the error responses "../warning" or ".../error" are set, then error message
"A1.F78" (IPOS SW limit switch) is displayed:
• Setting ".../error": After an error reset, the drive is no longer referenced with the in-
cremental encoder. The software limit switches have no effect. They are only activ-
ated again after the drive has been referenced. A drive with absolute encoder, by
contrast, remains referenced even after a fault reset.
• Setting ".../Warning": The drive remains referenced after an error reset. However,
the drive can move past the target specified due to the mass moment of inertia of
the machine or if the parameter settings are set incorrectly in the controller. Soft-
ware limit switches cannot prevent this from happening.
For deactivation, both limit switches must be set to "0" (e.g. for continuous travel).
P922 Position window
Setting range: 0–50–32 767 incr.
Defines a distance range (position window) around the target position of a travel or
stop command. The "Axis in position = Yes" condition applies if a drive is inside the
position window around the current target position (H492). The "Axis in position" in-
formation is used as a final condition for waiting positioning commands.
P923 Lag error window
Setting range: 0–5000–(2
31
-1)incr.
Defines a permitted difference between the setpoint and actual position value. The lag
error response that is set in the parameter P834 Response to 'lag error' (→2225)is
triggered upon exceeding.
The setting "0" deactivates the lag error monitoring.
16998413/EN – 12/2016