They better not be the E-stop.
Law requires the E-stop to be directly hard wired and it must cut the power to all IO boards as well as all drive circuits(this includes solenoids).
Racer is a company in Cambridge Ontario.
Their smaller machines are typically Korean type machines with controls installed (I usually see Fanucs but who knows what the used to do in the past). I don't like to call them retrofits because they are specifically designed to be CNC and have controls installed.
They also make large machines (from scratch) right in Cambridge, Boring mills, etc.
Not much help to you but interesting info and you could try phoneing them for help/info
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