ping for farm mode added

Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h

@@ -324,4 +324,8 @@ THERMISTORS SETTINGS
 #define Z_BABYSTEP_MIN -3999
 #define Z_BABYSTEP_MAX 0
 
+#define PING_TIME 25 //time in s
+#define PING_TIME_LONG 600 //10 min; used when length of commands buffer > 0 to avoid false triggering when dealing with long gcodes
+#define PING_ALLERT_PERIOD 60 //time in s
+
 #endif //__CONFIGURATION_PRUSA_H