Siemens SIMATIC S7-1500 Function Manual page 243

Resetting the "Homed" status
The "Homed" status of a technology object is reset under the following conditions
(<TO>.StatusWord.X5 (HomingDone)):
● Technology objects with incremental actual values:
● Technology objects with absolute actual values:
Homing a technology object with "Mode" = 1..8, 10
To home a technology object, follow these steps:
1. Check the requirements indicated above.
2. Specify the desired homing function in the "Mode" parameter.
3. Initialize the necessary parameters with values, and start the homing operation with a
If the "Done" parameter shows the value TRUE, then the "MC_Home" job has been
completed according to the selected "Mode". The "Homed" status of the technology object is
indicated under "Technology object > Diagnostics > Status and error bits > Motion status >
Homed" (<TO>.StatusWord.X5 (HomingDone)).
Termination of a passive homing process with "Mode" = 9
With "Mode" = 9, the technology object is not homed. If a running "MC_Home" job for
passive homing ("Mode" = 2, 8, 10) is overridden by another "MC_Home" job with
"Mode" = 9, then the running job is terminated with the parameter
"CommandAborted" = TRUE. The overriding job with "Mode" = 9 signals successful
execution with the parameter "Done" = TRUE.
Additional information
An option for the evaluation of the individual status bits can be found in the Evaluating
StatusWord, ErrorWord and WarningWord (Page 175) section.
S7-1500 Motion Control V13 Update 3
Function Manual, 07/2014, A5E03879256-AC
– Starting an "MC_Home" job with "Mode" = 3, 5, 8, 10
(After successful completion of the homing operation, the "Homed" status is reset.)
– Error in the encoder system, or encoder failure
– Restart of the technology object
– After POWER OFF -> POWER ON of the CPU
– Memory reset
– Modification of the encoder configuration
– Restoration of the CPU factory settings
– Modification of the encoder configuration
– Replacement of the CPU
positive edge at the "Execute" parameter.
Instructions
11.1 S7-1500 Motion Control V2
243