Used to cause the robot operation speed to low speed from
the external equipment.
The robot operates at a low speed (the low speed command is
valid) while this signal is open.
The robot operation speed in the low speed mode can be set
by means of the parameter. (Initial set value: 25 %)
When this signal is short-circuited, the previously set value
(initial set value: 100 %) takes effect again.
This signal can always be used, irrespective of the master
mode selected by means of the MODE switch.