A53 Z0 9 0020 L En Technical documentation
Chapter : Text file & PLC
followed by level 2 equations. This way, level 2 equation results can overwrite any conflicting level 1
equation.
The "INIT" part is only executed upon start-up, and the "PROG" part is executed every 100ms.
All the module variables can be used in the equations in the way defined below:
-E0xxx and E5xxx are read only as measurements/inputs. They can’t be changed by equations.
-E1xxx and E4xxx parameters can be read by equations. If allowed, they can also be modified using
MODBUS or equations downloaded via the text file (see {PARAMETERS} section of the text file chapter).
E2xxx parameters are PLC outputs. They can be read and written by custom equations.
Notes:
-Variables E1xxx/E4xxx are parameters stored in FLASH (non volatile memory). In level 2 and above, the user
can allow the parameters to be written by PLC equations or via MODBUS.
-Be very careful when modifying a parameter through equations, as unexpected behaviour (due to an error
in your equations for example) may damage your generator.
-It is advisable to include tests in the equations to verify that the engine is stopped prior to changing a
parameter. Otherwise, make modifications in the "INIT" block if possible. These parameter modifications
will not be saved in FLASH memory, i.e. parameters will be reset to their previous value if power supply is
turned OFF and then ON again, unless the user saves them manually.
-Use document A53 Z0 9 0030 to get a complete list of all module variables.
-Variables E2xxx/E5xxx are outputs from the PLC, they can be read and written by PLC equations without
restrictions.
The table below gives a list of all available instructions that can be used in custom PLC equations:
Starting point of PLC equations
Starting point of INIT equations
End of equations
Starting and ending points of a
block of equations
Logical operation used on a
whole variable (i.e. these are
not bit to bit operators)
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