
B-65280EN/05 FANUC BUILT-IN SPINDLE MOTOR Bis series 1.START-UP
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1.5.4 I/O Signals (CNC ↔ PMC)
(1) Address list of Input signals (PMC → CNC)
15i 16i 30i
#7 #6 #5 #4 #3 #2 #1 #0
1st- G227 G070 G070
MRDYA SFRA SRVA
2nd- G235 G074 G074
MRDYB SFRB SRVB
1st- G226 G071 G071
*ESPA
2nd- G234 G075 G075
*ESPB
1st- G228 G073 G073
EPFSTR
MPOFA
2nd- G236 G077 G077
EPFSTRB MPOFB
(2) Details of input signals (PMC → CNC)
(a) Machine ready signal (MRDYA)
This signal needs to be set to 1 before magnetic pole detection is
started by SFR/SRV or EPFSTR.
(b) Forward rotation command signal (SFRA) and reverse rotation command
signal (SRVA)
When bit 7 (EPFSIG) of parameter No. 4007 is set to 0, one of these
signals starts magnetic pole detection operation. Input one of the
signals. At this time, the command is ignored while the magnetic pole
detection state signal EPFIX = 0 (magnetic pole not detected).
However, as soon as EPFIX is set to 1 (magnetic pole detection
completed), the command is accepted to start rotation.
When bit 7 (EPFSIG) of parameter No. 4007 is set to 1, EPFSTR
functions as a start signal. Before starting magnetic pole detection
operation (EPFSTR = 1), input one of the SFR and SRV signals. Until
completion of magnetic pole detection, this signal functions as an
activation-on signal not specifying any rotation direction.
(c) Emergency stop signal (*ESPA)
This signal needs to be set to 1 before magnetic pole detection is
started by SFR/SRV or EPFSTR.
(d) Magnetic pole detection operation start signal (EPFSTRA)
This signal is a signal for starting magnetic pole detection operation.
This signal is valid when bit 7 (EPFSIG) of parameter No. 4007 is set
to 1. To make the operator concerned with magnetic pole detection
operation, this signal can be used together with EPFIX (magnetic pole
detection state signal).
While this signal is input, the spindle software ignores a command and
displays error 30 (on the SPM). So, this signal needs to be turned off
when EPFIX is set to 1.
This signal is invalid when SFR or SRV is used as a start signal. In
this case, do not input this signal.