
B–62073E–1/04 2. INTERFACE BETWEEN CNC AND PMC–NA OR NB
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(b) Switching from high–speed output (high) to low–speed output (low)
1 Conversion demand
signal (RSLA)
Refer to 1) a).
2 Power cable conversion
signal (RCHPA)
Refer to 1) c).
3 Electromagnetic
contactor 1 (MCC1)
Output conversion
speed or less.
4 Electromagnetig
contactor 2 (MCC2)
Output conversion
speed or more.
5 Power cable status
confirmation signal
(RCHA)
Refer to 1) b).
6 Conversion completion
signal (RCFNA)
Refer to 1) d).
ON(LOW)OFF(HIGH)
ON(HIGH)
OFF
OFF(LOW)
ON(LOW)
ON(LOW)
ON(LOW)
ON(LOW)
OFF(HIGH)
OFF(HIGH)
OFF(HIGH)
OFF(HIGH)
ONON
7 Drive enable signal
NOTE High–speed output cannot be switched to low–speed output if the switching request signal,
RSLA or RSLB, is entered with a speed exceeding the specified limit.
2.3.37 Signals for switching spindle control
[Name] Spindle control check signals: ( SPN0 [#1, #2] , SPN1 [#1, #2] )
[Classification]
Output signals
[Function] Informs the number of the spindle controlled by a tool post. Two binary–code signals are pro-
vided for each tool post. The spindle number corresponds to the signal as shown below:
Spindle number
1
i0
(2
i
xV
i
)
where
Vi = 0 when SPNi is low
Vi = 1 when SPNi is high
[Output Condition]
The signal is always output. The value is changed when spindle control is switched by
G10.7_; specified in a program.
Example When tool post 1 controls the first spindle and tool post 2 controls the second spindle in TT
series, the signals are output as follows: