M Code Output Function - Mitsubishi Electric MELSEC-Q Series User Manual

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13.7.3 M code output function

Positioning start signal

M code ON signal

( Md. 31 Status: b12)

Cd. 7 M code OFF request

Md. 25 Valid M code

Da. 1 Operation pattern

The "M code output function" is used to command sub work (clamping, drill rotation,

tool replacement, etc.) related to the positioning data being executed.

When the M code ON signal ([Md.31] Status: b12) is turned ON during positioning

execution, a No. called the M code is stored in "[Md.25] Valid M code". These "[Md.25]

Valid M code" are read from the PLC CPU, and used to command auxiliary work. M

codes can be set for each positioning data. (Set in setting item "[Da.10] M

code/Condition data No./Number of LOOP to LEND repetitions" of the positioning

The timing for outputting (storing) the M codes can also be set in the "M code output

The details shown below explain about the "M code output function".

[1] M code ON signal output timing

[2] M code ON signal OFF request

[3] Precautions during control

[4] Setting the M code output function

[5] Reading M codes

[1] M code ON signal output timing

The timing for outputting (storing) the M codes can be set in the "M code output

function". (The M code is stored in "[Md.25] Valid M code" when the M code ON

signal is turned ON.)

The following shows the two types of timing for outputting M codes: the "WITH

mode" and the "AFTER mode".

(1) WITH mode

The M code ON signal is turned ON at the positioning start, and the M code

is stored in "[Md.25] Valid M code".

[Y10 to Y1F]

[X10 to X1F]

1: m1 and m2 indicate set M codes.

Fig. 13.40 M code ON/OFF timing (WITH mode)

Chapter 13 Control Sub Functions