I'm confused by the wording vs image related to limit switches. My situation: Both X and Y need limit switches at either extreme ends, so I assume I wire the same axis limit switches in parallel or series depend on the convention used by the GND - SIG. I'm using micro switches. According to the Note in the documentation "Make sure to set $5=7 to use Normally Open switches with grblHAL on the BlackBox X32". There's never a mention of "normal closed" so I assume the blackbox x32 only has, as stated, NO convention. However, the image diagram shows what appears to be a normally closed wiring. I assume "normal" means a limit has not been encountered. As shown therefore, the circuit is closed and conducting. Bottom line: Am I connecting the limit switches as shown in image (to NC) and then wiring the two limit switches in series for a single axis or the other way around (NO and parallel)? Thanks. ref: docs:blackbox-x32:connect-micro-limit [OpenBuilds Documentation]
The images you linked to show them wired as NO (Normally open). Only the NO and Common (aka ground) are hooked up. If wiring NO at both extremes, they are wired in parallel.
