Jim you said you can use 1 limit switch per axis, but in the DMC 40x0 manual it sounds like you really need 2. Obviously you've installed this and have it working already so do you just wire it to FWD and it will still let you go the opposite way when you actually hit reverse? For some reason I'm getting the idea if you use one wired to forward, when you hit going the other way it still wants you to go REV to get off of it...?
"The forward limit switch (FLSx) inhibits motion in the forward direction immediately upon activation of the switch.
The reverse limit switch (RLSx) inhibits motion in the reverse direction immediately upon activation of the switch.
If a limit switch is activated during motion, the controller will make a decelerated stop using the deceleration rate
previously set with the SD command. The motor will remain on (in a servo state) after the limit switch has been
activated and will hold motor position. The controller can be configured to disable the axis upon the activation of a
limit switch, see the OE command in the command reference for further detail."