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Ostfildern, Jan 14, 2016

Release 13 of the automation system PSS 4000 from Pilz enables changes at runtime for safety applications – "Online Change" for safe automation for the first time

The "Non-persistent online change" function" can be used to transfer individual changes in the user programs to the control system. Now Pilz provides this function in the automation system PSS 4000 also for safety applications. Users will save time, because there is no need to compile and load the whole program during commissioning. The function is a component of release 13 of the automation system PSS 4000. Among the further innovations there is a device interface for communication with Profinet networks.

User programs and software blocks of a control system are often only put through final testing during commissioning, during which they undergo multiple modifications. The “non-persistent online change” function now allows individual changes to be fed into one or more control systems of the automation system PSS 4000 without it being necessary to compile and load the entire program. One entirely new feature is that this function is
now also available for safety-related applications. 

The changes are fed in without stopping the control system – the new program becomes active on the head modules with the next possible clock cycle after downloading. The changes apply for a maximum of 12 hours or until the control system is next restarted, so they are not permanent (non-persistent). If the changes are not accepted, the control system re‑establishes the status of the last complete download.
As well as simplifying and accelerating commissioning, the function improves the handling of safety in hectic commissioning processes.

The “non-persistent online change” function is available for all control systems of the automation system PSS 4000. Pilz thus advances the convergence of safety and automation in automation systems: the user works with a single tool for both spheres. It is available for use from the new firmware Release 13.

Communication stack for PROFINET

Other new features in Release 13 include the device interface for communication with PROFINET networks. Pilz has integrated PROFINET into the devices as a communication stack. This cuts inventory costs and reduces the range of types because this approach makes it possible to use the same hardware to operate different communication connections, including UDP RAW, Modbus/TCP, Ethernet/IP and now also PROFINET, merely with a change in the configuration. Users do not need a specific device type – one PLC head module can be used for universal access to the various communication systems.

Absolute novelty in the failsafe section: The "Non-persistent online change" function can be used to transfer individual changes in the user programs to the control system of the automation system PSS 4000.
Completely new in the failsafe sphere: the function “non-persistent online change” now means that individual changes in user programs can be transferred to the control system of the automation system PSS 4000.

Completely new in the failsafe sphere: the function “non-persistent online change” now means that individual changes in user programs can be transferred to the control system of the automation system PSS 4000.

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