Mitsubishi Electronics QD75MH2 ユーザーズマニュアル

 
 

 

12 - 71 

MELSEC-Q

 

12   CONTROL SUB FUNCTIONS 

 

Da. 1 Operation pattern

Md. 25 Valid M code

Cd. 7 M code OFF request

11

00

11

Warning occurs at this timing.
                                               

t

m1

m3

m2

V

1

OFF

ON

OFF

OFF

ON

ON

0

1 0

0

Positioning start signal

BUSY signal

M code ON signal

Positioning

m1 and m3 indicate set M codes. 

[XC, XD, XE, XF]

[Y10, Y11, Y12, Y13]

[X4, X5, X6, X7]

 

Fig. 12.40 Warning due to an M code ON signal during continuous path control 

 

POINT 

 

If the M code output function is not required, set a "0" in setting item "

Da.10

 M 

code" of the positioning data. 

 

[3]   Precautions during control 

(1)  During interpolation control, the reference axis M code ON signal is turned 

ON.  

 

(2)  The M code ON signal will not turn ON if "0" is set in "

Da.10

M code". (The 

M code will not be output, and the previously output value will be held in 
"

Md.25

Valid M code".) 

 

(3)  If the M code ON signal is ON at the positioning start, an error "M code 

signal ON at positioning start (error code: 536)" will occur, and the 
positioning will not start.  

 

(4)  If the PLC READY signal (Y0) is turned OFF, the M code ON signal will turn 

OFF and "0" will be stored in "

Md.25

Valid M code".  

 

(5)  If the positioning operation time is short during continuous path control, there 

will not be enough time to turn OFF the M code ON signal, and a warning "M 
code signal ON (error code: 503)" may occur. In this case, set a "0" in the 
"

Da.10

 M code" of that section's positioning data.  

 

(6)  In the AFTER mode during speed control, the M code is not output and the 

M code ON signal does not turn ON. 

 

(7)  If current value changing where "9003" has been set to "

 Cd.3 

Positioning 

start No." is performed, the M code output function is made invalid.