This I/O database is the Modbus register map. The SCADAPack firmware reserves space in NVRAM for the I/O database, roughly 42kB of memory. NVRAM is most commonly used for storing information (logs, calculated values, etc.) in the background as this memory survives power cycles. But there are some fixed pieces that are always in memory. Different applications consume this memory differently.
SCADAPacks have three types volatile memory (RAM), non-volatile memory (NVRAM), and flash disk storage (ROM). Memory in the SCADAPack controller is not very well understood. They are quite flexible and easy to use, particularly the Telepace based variants. These controllers are very common in Canadian oil and gas and worldwide in water/waste water. I have been working with SCADAPacks since around 2009.
Connecting scadapack to telepace studio download#
However, what many people do not know is that they have a relatively old OS and do not have great memory management. We work with SCADAPack PLCs a lot in our line of work.