Parameterising the synchronization methods

Synchronization method

The synchronization method of each corresponding M function is defined in the table entitled P-CHAN-00041 (m_synch). The field index "MNr" corresponds to the number of the M function. The value specifies which synchronization method the M function possesses, i.e. when output to the PLC and a check for the presence of the PLC acknowledgement take place. A motion is not executed, or is stopped at the latest towards the end of the block, if no acknowledgement has arrived from the PLC.

The corresponding table P-CHAN-00027 (h_synch) is used for H functions.

Parameters

P-CHAN-00041

Synchronisation method of the M function with the number MNr

P-CHAN-00027

Synchronisation method of the H function with the number HNr

Parameterising the synchronization methods 1:

In NC program the synchronization method of each M/H function also can be changed by corresponding variables (V.G.M_FCT[MNr].SYNCH or V.G.H_FCT[HNr].SYNCH) [PROG].

Synchronisation methods

Symbol

Value

Meaning

NO_SYNCH

0x00000000

No output of the M/H function to PLC

MOS

0x00000001

Output of the M/H function to PLC without synchronization

MVS_SVS

0x00000002

Output of the M/H function to PLC before the motion block,
synchronization before the motion block

MVS_SNS

0x00000004

Output of the M/H function to PLC before the motion block,
synchronization after the motion block

MNS_SNS

0x00000008

Output of the M/H function to PLC after the motion block,
synchronization after the motion block

MNE_SNS

0x00000020

Output of the M/H function to PLC after an event (e.g. measurement interrupt),
synchronization after the motion block
(for option edge banding only)

Synchronisation across blocks

CAUTION: Is only allowed for M functions!

MVS_SLM

0x00004000

Late synchronization, M function output at the start of the block. Synchronisation at the transition to the motion block with machining feed rate (G01/G02/G03) ('late' synchronization implicit, Sync. late movement)

MVS_SLP

0x00008000

Late synchronization, M function output at the start of the block. Synchronisation in the case of the NC command #EXPL SYN ('late' synchronization explicit, Sync. late program)

Synchronisation pre-output

MEP_SVS

0x01000000

M/H function output to PLC with a specified distance,
synchronization before the next block

MET_SVS

0x02000000

M/H function output to PLC with a specified time,
synchronization before the next block

MOS_TS

0x00040000

CAUTION: Is only allowed for M functions!

Output of the M function to the PLC before the motion block without synchronization, sample time offset as parameter for precise time-related output in PLC.

M or H output

Synchronisation

Before
NC block

After
NC block

After
event

Pre-output according to specified distance/time

None

Before motion

MVS_SVS

 

 

MEP_SVS, MEP_SVS

 

After motion

MVS_SNS

MNS_SNS

MNE_SNS

 

 

Implicit at next transition
to G01/G02/G03

MVS_SLM

 

 

 

 

Programmed synchronization

MVS_SLP

 

 

 

 

None

MOS

 

 

 

NO_SYNCH

None

MOS_TS

 

 

 

 

Parameterising the synchronization methods 2:

The reaction of the synchronization methods MVS_SVS, MVS_SNS and MNS_SNS is identical if M or H functions are programmed without motion in the block.

Example 

#****************************************
#Definition of M functions and synchronization methods
#======================================================
m_synch[0]        0x00000002     MVS_SVS
m_synch[1]        0x00000001     MOS
m_synch[2]        0x00000002     MVS_SVS
m_synch[8]        0x00000008     MNS_SNS
m_synch[9]        0x00000000     NO_SYNCH
#Definition of H functions and synchronization methods
#=====================================================
h_synch[0]        0x00000001     MOS
h_synch[1]        0x00000002     MVS_SVS
h_synch[2]        0x00000004     MVS_SNS
h_synch[3]        0x00000008     MNS_SNS
h_synch[4]        0x00000002     MVS_SVS
#