Siemens SINUMERIK 840D sl Function Manual page 530

K1: Mode group, channel, program operation, reset response
9.9 Program operation
The START command can only be executed in AUTOMATIC and MDA modes. For this, the
channel concerned must be in the following state:
DB21, ... DBX35.7(channel status reset) or
DB21, ... DBX35.6 (channel status interrupted).
Signals, Alarms
Required signal states
The part program can now be enabled for execution in the channel with the START command
on the condition that certain signal states exist on the machine.
The following enable signals are relevant on the NC/PLC interface:
● DB11 DBX4.4 (mode group ready) must be present
● DB11 DBX0.7 (mode group reset) must not be present
● DB21, ... DBX1.7 (activate program test) must not be present
● DB21, ... DBX7.0 (NC start disable) must not be present
● DB21, ... DBX7.2 (NC stop at the block limit) must not be present
● DB21, ... DBX7.3 (NC stop) must not be present
● DB21, ... DBX7.4 (NC stop axes plus spindle) must not be present
● DB21, ... DBX7. 7 (reset) must not be present
● DB10 DBX56.1 (emergency stop) may not be present
● No axis or NCK alarm must be active
For a further explanation of the individual signals see Section 5.
Execution of command
The part program or the part program block is automatically executed and the the following
interface signals are set:
DB21, ... DBX35.5 (channel status reset)
DB21, ... DBX35.0 (program status running)
The program is processed until the end of the program has been reached or the channel is
interrupted or aborted by a STOP or RESET command.
Alarms
Under certain conditions the START command will have no effect and one of the following
alarms will be triggered:
● 10200 "No NC Start permitted with active alarm"
● 10202 "No NC Start permitted with active command"
● 10203 "No NC Start permitted for non-referenced axes"
References:
Diagnostics Manual, Alarms
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions