From d5d72c8505a9948085f8f156a92d74de8cd85b92 Mon Sep 17 00:00:00 2001
From: bdring <barton.dring@gmail.com>
Date: Mon, 17 Feb 2025 13:25:47 -0600
Subject: [PATCH] Add arc_ok pre-check

---
 FluidNC/src/Spindles/PlasmaSpindle.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/FluidNC/src/Spindles/PlasmaSpindle.cpp b/FluidNC/src/Spindles/PlasmaSpindle.cpp
index 565ad5534..e5ba6b28e 100644
--- a/FluidNC/src/Spindles/PlasmaSpindle.cpp
+++ b/FluidNC/src/Spindles/PlasmaSpindle.cpp
@@ -63,7 +63,13 @@ namespace Spindles {
             set_enable(false);
 
         } else {
-            // TODO maybe check arc OK is not on before starting
+            // check arc OK is not on before starting
+            if (_arcOkEventPin->get()) {
+                log_error(name() << " arc_ok active before starting plasma");
+                mc_critical(ExecAlarm::SpindleControl);
+                return;
+            }
+
             if (!wait_for_arc_ok()) {
                 return;
             }