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6 Message Frames
6.5 Message frame overview
Function
Partner: Computer
Message frames for operator-process communication
Computer link cold restart by CNC
Computer link cold restart by CNC
Synchronization
Start of synchronization
Rejection/abort by CNC (neg. acknowledgement)
Transmission of status data (pos. acknowledgement)
End of synchronization message
Abort by production control
Interrogation of "all" pallets at machine
Pallet data request
Rejection by CNC (neg. acknowledgement)
Pallet data transmission (pos. acknowledgement)
Data of last pallet transmitted (end)
Abort of pallet data transmission by production control
End-of-work
Action:
Change end-of-work status
Response: Rejection by CNC (neg. acknowledgement)
End-of-work status changed (pos. acknowledgement)
Pallet arrival messages
Action:
Pallet delivered to machine
Response: negative acknowledgement
positive acknowledgement
Pallet delivered to machining station
NC program selection/start/end message
Action:
NC program selection with start enable
Response: negative acknowledgement
positive acknowledgement
Report start of machining
Report end of machining
Remove pallet from machining station
Action:
Remove pallet
Response: negative acknowledgement
positive acknowledgement
Event message frames
NC alarms on
PLC alarms on
All alarms off
Operator interrupt on
Operator interrupt off
Status message on
Status message off
Continuation message
6–8
R
NS
_
T
SY
_
T
SY
_
R
_
T
SY
_
R
SY
_
T
SP
_
T
SP
_
R
SP
_
R
SP
_
R
SP
_
C
FA
_
C
FA
_
Q
FA
_
R
PN
_
R
PN
_
Q
PN
_
R
PN
_
C
CS
_
C
CS
_
Q
CS
_
R
CS
_
R
CS
_
C
PA
_
C
PA
_
Q
PA
_
R
AL
_
R
AL
_
R
AL
_
R
BU
_
R
BU
_
R
BM
_
R
BM
_
R
FS
_
© Siemens AG 1989 All Rights Reserved
Identific-
Prod. ctrl
Message
ation
CNC
fr. type
____
____
F
_
__
SY
____
E
_
__
F
_
__
g
_
__
F
g
_
_
g
___
Eg
__
F
g
_
_
____
F
_
__
____
Mg
__
FMg
_
Mg
__
Bg
__
Ag
__
FAg
_
Ag
__
Ag
__
Eg
__
g
___
F
g
_
_
g
___
KN
__
KP
__
G
__
_
K
__
_
G
__
_
K
__
_
G
__
_
____
6FC5 197-0AB20-0BP0
SINUMERIK 840/880 (PJ)
08.89
S
S
S
S
S
S
P
P
P
P
P
S
S
S
P
P
P
P
P
P
P
P
P
P
P
P
S
S
S
S
S
S
S
S
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