Mitsubishi Electric MELDAS 60 Series Programming Manual page 229

(c) Tool status ..... Bits 8~F of file register Rn (such as R3728)
bit
Tool status (numeric data 0~4)
bit 8
bit 9
bit A
bit B
bit C
bit D
bit E
bit F
(d) Tool status contents
When the tool status number is 0 or 1, NC assumes the tool to be available.
Tool status
number
Indicates unused tool.
0 Normally, this state is set when tool is replaced with a new tool.
Indicates used tool.
1
When actual cutting is started, this state is set.
Indicates normal life tool.
2
When use data exceeds life data, this state is set.
Indicates tool error 1 tool.
3 When controller inputs the tool error 1 signal, this state is set.
Indicates tool error 2 tool.
4
When controller inputs the tool error 2 signal, this state is set.
Explanation
0: Unused tool
1: Used tool
2: Normal life tool
3: Tool error 1 tool
4: Tool error 2 tool
(Reserved)
Explanation
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9. Exclusive Commands