Rockwell Automation 1746-HSRV SLC Servo Control Module User Manual - Manual (Page 48)

Publication 1746-6.1.2 - July 2000
Wiring the SLC Servo Module 5-5
Software Overtravel Limits
Software overtravel limits appear in the table below.
When you are using a check, the SLC Servo Module tests each
program for motion past an overtravel limit before the programmed
motion is executed.
The SLC Servo Module monitors software overtravel limits
continuously during motion. Software overtravels are disabled during
homing and are not active until the axis is homed. Software overtravel
limits are located inside hardware overtravel limits. Hardware
overtravel limits cause Estop when tripped.
Figure 5.4 Software Overtravel Limits
Connecting Home Limit
Switch as a Fast Input You can configure the home limit switch to come from the termination
panel, or from the backplane by setting configuration word 1, bit 0.
The 1 represents termination panel Fast Input 3. The 0 represents
Name What it specifies Default Range
Software overtravels used Whether control checks
software overtravel limits Yes Yes (used) or
No (not used)
IMPORTANT
Check positive and negative software and hardware
overtravel limits only if Overtravels Used (word 0, bit
7) is set.
0 - +
Negative Overtravel Limit
W10-W11 Positive Overtravel Limit
W8-W9
Positive Hardware Overtravel Limit
(causes Estop) Negative Hardware Overtravel Limit
(causes Estop)