From 4578c573fefae108c32d5e4d76c5e36b66bedf42 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Wed, 15 Feb 2017 01:01:00 -0600
Subject: [PATCH] Pause the print job timer while in M600

---
 Marlin/Marlin_main.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 885e07c5357a..dec556ad696f 100755
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -7328,6 +7328,10 @@ inline void gcode_M503() {
 
     busy_doing_M600 = true;  // Stepper Motors can't timeout when this is set
 
+    // Pause the print job timer
+    bool job_running = print_job_timer.isRunning();
+    print_job_timer.pause();
+
     // Show initial message and wait for synchronize steppers
     lcd_filament_change_show_message(FILAMENT_CHANGE_MESSAGE_INIT);
     stepper.synchronize();
@@ -7518,6 +7522,10 @@ inline void gcode_M503() {
 
     // Show status screen
     lcd_filament_change_show_message(FILAMENT_CHANGE_MESSAGE_STATUS);
+
+    // Resume the print job timer if it was running
+    if (job_running) print_job_timer.start();
+
     busy_doing_M600 = false;  // Allow Stepper Motors to be turned off during inactivity
   }