Mitsubishi FX2N-10GM Hardware / Programming Manual page 94

FX Series Positioning Controllers
PARA. 20: Limit switch logic
Set the logic of the limit switch (LS) used to confirm the machine operation limit. Apart from the
limit switches, software limits (set by PARA. 25 and PARA. 26) are also available.
Table 4.25: Limit switch logic
Setting = "0" : Normally open. (The limit switch is closed at the limit.)
Setting = "1" : Normally closed. (The limit switch is opened at the limit.)
PARA. 13 to PARA. 20 control the portion shown in the figure below.
For the details of return to the zero point, refer to "8.2.1 Zero point return control instruction".
*1 The number of zero point signal pulses (PG0) sent from the drive unit to the positioning unit
is counted, and operation is stopped when this number reaches the specified value. Usually,
one zero point pulse is generated per rotation of the motor.
The machine zero return command can be given by either of the following four methods.
1) Turning ON an external input (from the [ZRN] terminal).
2) Executing the cod 28 (DRVZ, machine zero return) command.
3) Sending the machine zero return command from a peripheral unit.
4) Turning ON the special auxiliary relay (M9008 for the X axis and M9024 for the Y axis).
FX -10GM
2N
Parameters 4
FX -20GM
2N
4-18