Automatic control function programming manual ladder language

Nonmodal functions
A nonmodal function is enabled only during execution of the part programme block containing it.
Example (On group 1)
N100 X100 Z200 M6 M6 sent to the machine processor, i.e. %R122.3 = 1.
N100 X50 M6 cancelled by acknowledgement of the previous block, i.e. %R122.3 = 0.
! CAUTION
All the decoded M functions are acknowledged by a response (CRM1 to CRM8)
Variables
The status of CRM1 to CRM8 determines whether the part programme is continued or waits
for the end of execution of the block
The automatic control function must manage CRM1 to CRM8 for the programmed
functions and the functions cancelled or reset (by a reset or INIT).
Modal M function
Nonmodal M function
CRMg
1 PLC
cycle
Wait for
CRMg
Block n
Programme contined
Figure 3.6 - Processing of decoded M functions.
Block n + 1
REMARK If CRM1 to CRM8 remains high, the part programme is continued after the PLC cycle.
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