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MELSEC-L Series

Simple Motion Modules(64)

LD77MS(32)
LD77MH(32)

FAQ within [ MELSEC-L Series ]

1-10 of Total 32

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M-code

"M-code" is outputted to turn ON/OFF machine's solenoids or relays according to the start/end of the positioning operation. The following two modes are sele... More Details >>
- No：23596
- Release Date：2018/09/14 15:09
- Category： RD77MS , RD77GF , FX5SSC , QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD75M
Error 108

Error 108 (Start not possible) occurs when a start is requested while a stop signal is ON.Check the "[Md.26] Axis operation status".If "20: Servo amplifier ... More Details >>
- No：23613
- Release Date：2018/09/14 15:09
- Category： QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD75M , QD74MH
Error 1201

Error1201 (HPR data incorrect) occurs when the backup data for absolute position restoration is lost.Execute the machine home position return after checking ... More Details >>
- No：23604
- Release Date：2018/09/14 15:09
- Category： QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD75M , QD74MH
HPR request flag

It depends on the setting of servo parameter "[PA03] Absolute position detection system" whether the HPR request flag ("[Md.31] Status": b3) turns ON or not.... More Details >>
- No：23617
- Release Date：2018/09/14 15:09
- Category： QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD75M
Alarm E7

Alarm E7 (Controller forced stop warning) occurs when an forced stop is executed by the Positioning module or the Simple Motion module. The following shows h... More Details >>
- No：23607
- Release Date：2018/09/14 15:09
- Category： RD77MS , RD77GF , FX5SSC , QD77MS , QD77GF , LD77MS , LD77MH , QD75MH
Parameter initialization

The following shows the initialization procedure. (1) Turn OFF the PLC ready flag. (2) Turn ON "[Cd.2] Parameter initialization request". [QD75M, QD75MH, LD... More Details >>
- No：23602
- Release Date：2018/09/14 15:09
- Category： QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD75M
Home position address

Set "[Pr.45] Home position address (72+150n, 73+150n)" of the basic parameters for home position return.Set by 2 words.The value will be reflected when PLC r... More Details >>
- No：23599
- Release Date：2018/09/14 15:09
- Category： FX5SSC , QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD75M , QD74MH
BUSY signal

The BUSY signal turns ON even when position control of movement amount "0" is executed.However, since the ON time is short, the ON status may not be detected... More Details >>
- No：23612
- Release Date：2018/09/14 15:09
- Category： RD77MS , RD77GF , FX5SSC , QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD75M , QD74MH
Servo motor rotation direction

To reflect the change, set "[PA14] Rotation direction selection/travel direction selection" and cycle the servo amplifier or execute a home position return a... More Details >>
- No：23620
- Release Date：2018/09/14 15:09
- Category： RD77MS , RD77GF , FX5SSC , QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD75M , QD74MH
Torque limit

Torque is limited by the lower set value of "[Pr.17] Torque limit setting value" and "[Cd.22] New torque value/forward new torque value".When the current tor... More Details >>
- No：23591
- Release Date：2018/09/14 15:09
- Category： QD77MS , QD77GF , LD77MS , LD77MH , QD75MH , QD74MH

1-10 of Total 32

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