Job Management: Start Job - Siemens SINUMERIK 840D sl Function Manual

P4: PLC for SINUMERIK 828D
14.6 Function interface
Note
Channel-specific variables
When reading/writing channel-specific variables, only the variables of exactly one channel may
be addressed in a job.
Drive-specific variables
When reading/writing drive-specific variables, only the variables of exactly one SERVO drive
object may be addressed in a job. The SERVO drive object must be assigned to a machine
axis of the NC. The line index corresponds to the logical drive number.
Error case
In the event of an error, reading/writing variables from different drive objects, or simultaneously
from a channel and a drive object, an error message is output:
DB1200.DBX3000.1 == 1 (error occurred)
Example: Reading a variable of the "Location type" as the fourth variable
DB1203.DBB1000: 7
DB1203.DBB1001: -
DB1203.DBW1002: <Location number>
DB1203.DBW1004: <Magazine number>
DB1203.DBW1006: -
DB1203.DBD1008: -
Example: Writing a variable as the fourth variable
To write a data item to the NC, the value must be entered into the double word DBD1008:
DB1203.DBB1000: <Variable index>
DB1203.DBB1001: <Area number>
DB1203.DBW1002: <Column index>
DB1203.DBW1004: <Line index>
DB1203.DBW1006: -
DB1203.DBD1008: <value>
14.6.1.3

Job management: Start job

The following data must be written by the user to the global job interface:
DB120x
1)
Byte Bit 7
DBB 0
DBB 1
1) DB120x, with x = 0 ... 7 corresponds to variable 1 ... 8.
1102
Reading/writing NC data (PLC → NCK)
Bit 6 Bit 5
Number of variables to be processed in the job
Bit 4 Bit 3
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Bit 2 Bit 1
Job type Job: Start
Basic Functions
Bit 0