Siemens SIMATIC S7-1200

Technology instructions
10.3 Motion control
S7-1200 Programmable controller
736 System Manual, V4.2, 09/2016, A5E02486680-AK
10.3.7.3
MC_Reset (Confirm error)
Table 10- 57 MC_Reset instruction
LAD / FBD
SCL
Description
"MC_Reset_DB"(
Axis:=_multi_fb_in_,
Execute:=_bool_in_,
Restart:=_bool_in_,
Done=>_bool_out_,
Busy=>_bool_out_,
Error=>_bool_out_,
ErrorID=>_word_out_,
ErrorInfo=>_word_out_);
Use the MC_Reset instruction to acknowledge
"Operating error with axis stop" and "Configura-
tion error". The errors that require acknowl-
edgement can be found in the "List of ErrorIDs
and ErrorInfos" under "Remedy".
Before using the MC_Reset instruction, you
must have eliminated the cause of a pending
configuration error requiring acknowledgement
(for example, by changing an invalid accelera-
tion value in "Axis" technology object to a valid
value).
As of V3.0 and later, the Restart command
allows the axis configuration to be downloaded
to the work memory in the RUN operating
mode.
1
STEP 7 automatically creates the DB when you insert the instruction.
2
In the SCL example, "MC_Reset_DB" is the name of the instance DB.
The MC_Reset task cannot be aborted by any other motion control task. The new MC_Reset
task does not abort any other active motion control tasks.
Table 10- 58 Parameters of the MC_Reset instruction
Parameter and type
Data type
Description
Axis
IN
TO_Axis_1
Axis technology object
Execute
IN
Bool
Start of the task with a positive edge
Restart IN Bool
TRUE = Download the axis configuration from the load memory to the
work memory. The command can only be executed when the axis is
disabled.
FALSE = Acknowledges pending errors
Done
OUT
Bool
TRUE = Error has been acknowledged.
Busy
OUT
Bool
TRUE = The task is being executed.
Error OUT Bool TRUE = An error has occurred during execution of the task. The
cause of the error can be found in parameters "ErrorID" and "ErrorIn-
fo".
ErrorID
OUTP
Word
Error ID for parameter "Error""
ErrorInfo
OUT
Word
Error info ID for parameter "ErrorID"
To acknowledge an error with MC_Reset, follow these steps:
1. Check the requirements indicated above.
2. Start the acknowledgement of the error with a rising edge at the Execute input parameter.
3. The error has been acknowledged when Done equals TRUE and the technology object
tag <Axis name>.StatusBits.Error equals FALSE.