Automatic control function programming manual ladder language

Encoded M function
for group g
MCODCRg
Response from group g
CRMg
3 - 56 en-938846/8
1 PLC
cycle
Wait for
CRMg
1 PLC
cycle
MCODCRg = function code MCODCRg = 0
Figure 3.5 - Encoded M functions with response.
Programme continued
REMARK If CRM1 to CRM8 remains high, the part programme is continued after one PLC cycle.
3.8.3.6 Decoded M Functions: %Rg20.L
These functions used in part programmes are accessible for read by the automatic control function.
These functions are defined by and known to the system (e.g. axis clamping, spindle speed range, etc.).
The automatic control function reads the function on a bit (%Rg2n.i) assigned to a decoded M function.
A distinction is made between:
Modal functions
M function
BEFORE
AXIS
movement
AXIS
movement
M
function AFTER
A modal function remains stored and enabled during the execution of several part programme blocks, until it is
cancelled.
Example (On group 1)
N100 M3 M40 S1000 M3 and M40 sent to the machine processor, i.e. %R122.0 = 1 and %R121.0 = 1.
N110 X100 Movement on X. %R122.0 = 1 and %R121.0 = 1 remain enabled in the machine
processor.
N120 M5 M5 sent to the machine processor, cancelling M3, i.e. %R122.2 = 1 and %R122.0 = 0.