Operating instructions

Commissioning (software)
2.2 Parameters
Control Units CU240S
Operating Instructions (Compact), 04/2006, A5E00766042B AA
2-3
2.2.2 Write parameters
Description
Parameters which can be written into and displayed are indicated by the prefix "P".
These parameters directly influence the behaviour of a function. The value of this parameter
is saved in non-volatile memory (EEPROM) as long as the appropriate option was selected
(non-volatile data save). Otherwise, these values are saved in the volatile memory (RAM) of
the processor, which are lost after power failure or power-off/power-on operations.
Examples of the standard notation used throughout our manuals is given below.
Notation examples:
P0970 parameter 970
P0748.1 parameter 748, bit 01
P0819[1] parameter 819 index 1
P0013[0 ... 19] parameter 13 with 20 indices (indices 0 to 19)
2.2.3 Monitoring parameters
Description
Parameters which can only be monitored are indicated by the prefix "r".
These parameters are used to display internal quantities, for example states and actual
values.
Notation examples:
r0002 monitoring parameter 2
r0052.3 monitoring parameter 52, bit 03
r0947[2] monitoring parameter 947 index 2
r0964[0 ... 4] monitoring parameter 964 with 5 indices (indices 0 to 4)
2.2.4 Parameter Attributes
Overview
In the Parameter List, the header line of each parameter shows all the attributes and groups
for that specific parameter. The figure below shows the details for parameter P0700 and
r1515.