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

 
 

 

12 - 72 

MELSEC-Q

 

12   CONTROL SUB FUNCTIONS 

 

[4]   Setting the M code output function 

The following shows the settings to use the "M code output function".  
(1)  Set the M code No. in the positioning data "

Da.10

 M code".  

 

(2)  Set the timing to output the M code ON signal (X4, X5, X6, X7). 

 

Set the required value in the following parameter, and write it to the QD75MH. 
The set details are validated at the rising edge (OFF   ON) of the PLC READY 
signal (Y0). 

 

Buffer memory address 

Setting item 

Setting 

value 

Setting details 

Axis 

1 

Axis 

2 

Axis 

3 

Axis 

4 

 Pr.18  

M code ON signal 
output timing 

 

Set the timing to output the M code ON signal. 
    0: WITH mode 
    1: AFTER mode 

27  177 327 477 

 

                  Refer to Section 5.2 "List of parameters" for setting details. 

 

[5]   Reading M codes 

"M codes" are stored in the following buffer memory when the M code ON signal 
turns ON.  

 

Buffer memory address 

Monitor item 

Monitor 

value 

Storage details 

Axis 

1 

Axis 

2 

Axis 

3 

Axis 

4 

Md.25   Valid M code 

 

The M code No. (

Da.10

M code) set in the 

positioning data is stored. 

808 908 1008 1108 

 

                   Refer to Section 5.6 "List of monitor data" for information on the storage details. 

 

The following shows a PLC program example for reading the "

Md.25

 Valid M 

code" to the PLC CPU data register (D110). (The read value is used to command 
the sub work.) 
Read M codes not as "rising edge commands", but as "ON execution 
commands".  

 

M code ON signal

K1

D110

K808

H0

FROM

ON execution command

D110: valid M codes

Example