
B-65395EN/01 HANDLING 2.SIGNAL DESCRIPTIONS
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(18) Interface switch signal DRC
[Classification] Output signal <Yy+1#5>
[Function] The host informs the servo amplifier module of the interface type
(peripheral equipment control interface or direct command interface) to
be used.
[Operation] When the DRC signal is 0, the slave runs using the peripheral
equipment control interface. When it is 1, the slave runs using the direct
command interface. The servo amplifier module also sends the interface
status notification signal DRCO ((19) of Section 2.3.14) to the host.
After detecting the DRCO signal, the host issues commands.
After changing the DRC signal, the host should not issue a command
within one scan after the DRCO signal changes. Once the state of the
DRC signal is inverted, do not invert it again before the state of the
DRCO signal changes accordingly, as data communication with the
servo amplifier module is hindered. Before inverting the state of the
DRC signal again, wait for at least one scan after the state of the DRCO
signal changes.
NOTE
Usually, the DRC signal should not be switched
while the power is switched on. If necessary, it
should be switched during a reset state, that is,
while neither automatic nor JOG operation is in
progress. Moreover, it should not be switched when
the motor is not in the in-position state.
(19) Interface status notification signal DRCO
[Classification] Input signal <Xx+1#1>
[Function] The servo amplifier module informs the host of the current interface
mode (peripheral equipment control or direct command interface).
After detecting the DRCO signal, the host issues commands.
[Input condition] The signal becomes 1 when:
1. The slave is in direct command interface mode.
The signal becomes 0 when:
1. The slave is in peripheral equipment control interface mode.