
B-63494EN/02 5.I/O SIGNALS
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Guard lock state signal
GDL1 <G191#5>, GDL2 <DI+001#5>
[Classification] Input signal
[Function] This signal posts the guard lock state to the CNC and monitor with the
dual check safety function.
0: Guard unlocked state
1: Guard locked state
[Operation] This signal is usually not used, but please input same signal (GDL1)
both via PMC and via FSSB all time because dual-check for guard
lock state signal (GDL2) is executed by CNC and monitor.
MCC contact state signal
*SMC1 <G191#6>, *SMC2 <DI+001#6>
[Classification] Input signal
[Function] This signal posts the MCC state to the CNC and monitor with the dual
check safety function.
0: MCC-on state
1: MCC-off state
[Operation] When the MCC contact state signals (*SMC1 and *SMC2) are 1 in
the emergency stop state, the CNC sets the guard unlock signal
(*LGD to *LGD4) to 1 (to enable guard unlocking).
The MCC contact state signals (*SMC1/*SMC2) is used to check if
the MCC-on enable signals (MCF1/MCF2) operates normally in MCC
off Test mode.
Input this signal according to the MCC state.
Guard unlock signal
*LGD <F191#0>, *LGD2<F350#0>, *LGD3<F350#1>, *LGD4<F350#2>
[Classification] Output signal
[Function] This signal notifies that guard unlocking is enabled with the dual
check safety function.
When guard unlock signal (*LGD to *LGD4) is 0, the guard is locked.
When *LGD to *LGD4 is 1, the guard is unlocked.
Guard unlock signal (*LGD to *LGD4) is not output via the FSSB.
[Output condition] In the following cases, this signal is set to 1 (to enable guard
unlocking):
• When the MCC contact state signals *SMC1 and *SMC2 are set
to 1 (MCC OFF state) in the emergency stop state, all of *LGD
to *LGD4 are set to 1.
• *LGD to *LGD4 are set to 1 when the guard open request signals
ORQ to ORQ4 are set to 1, the servo motor and spindle motor
are operating within the safety speed, the machine position is
within the same range, and the MCC off Test execution request
signal RQT is set to 0.
(The guard open request signal ORQ corresponds to the guard
unlock signal *LGD, ORQ2 corresponds to *LGD2, ORQ3
corresponds to *LGD3, and ORQ4 corresponds to *LGD4.)
In cases other than the above, this signal is set to 0 (to disable guard
unlocking).
For the setting of multiple doors, see the description of parameter No.
13800.