System Program (Sop) - Siemens 6SR41 series Product User Manual

Application and Operation

6.4 System Program (SOP)

6.4 System Program (SOP)
The Harmony Series of digital drives contain customized programmable logic functions that
define many features and capabilities of the drives. These logic functions are combined into
a system program (SOP) that can be edited either at the factory or in the field. Examples of
logic functions include start/stop control logic, reference signal handling, input/output control
logic (e.g., annunciators, interlocks, etc.), drive-to-machinery coordination and more. The
system program is stored on the drive's flash disk. Upon power-up, it is executed
continuously by the drive's run-time software in a repetitive fashion, causing the intended
logic statements to perform their functionality depending on system operating conditions.The
SOP is developed and compiled off-line and can be downloaded to the drive's flash disk via
either serial or Ethernet ports. Note that while the drive flash disk can hold multiple system
programs, only one SOP can be active at any time, and the VFD output must be idle to
change the active SOP.
See also
Raw Speed Reference (Page 119)
118
Operating Instructions, Version AE 12/2009, A5E01454341C
Product User Manual