Technical data

5-176 Bosch Rexroth AG | Electric Drives and Controls Rexroth VCP-Operating Concept | R911305038 / 01
Standard Mode
Variables for Status Messages
You must specify the memory address for the parallel message system
as a symbolic variable in the system parameters for messages . All
variable types that the controller can access bit-by-bit, and the operat-
ing device can access byte-by-byte or word-by-word are permitted.
A bit set in a byte activates the corresponding status message in the
operating device.
Variable for Acknowledging Messages
The variable for acknowledging messages has the same structure as
the variable for the messages themselves.
Each bit set in a byte represents the acknowledgment of the corre-
sponding message.
5.23 Recipes
Various logically related variables can be organized into units known
as recipes. Unlike mask variables, recipe variables are not transferred
to the controller immediately after being entered, but are stored in the
operating device as data sets. These data sets are protected against
power failure. The data sets can be loaded to the controller as a unit as
and when required.
The maximum number of recipes that can be created at programming
time is 250. For each recipe, up to 250 data sets can be created. The
data sets can either be created at programming time and be stored in
the operating device's Flash memory together with the project or can
be entered online on the operating device and are then stored in the
battery-backed RAM.
You must copy data sets stored in the Flash memory to the RAM first
before you can edit them. Data sets that have been edited remain in
the battery-backed RAM.
Word High-Byte Low-Byte
Byte 2 1
Bit 7654321076543210
Message
no.
16151413121110987654321
Fig. 5-64: Structure of variables for status messages with 2 bytes