Technical data

5-174 Bosch Rexroth AG | Electric Drives and Controls Rexroth VCP-Operating Concept | R911305038 / 01
Standard Mode
5.22.7.1 Settings for Status Messages
Size in Bytes
Enter the size of the parallel message system in bytes. You can trans-
fer eight status messages per byte. The absolute size depends on the
data type used (address of the variables). For example, the number of
bytes is always rounded up for a word address.
The maximum size for the parallel message system is limited to 256
bytes.
Depending on the operating device, different storage quantities are
available, which are also used differently for messages and data sets.
This is how you determine the memory requirement in your operating
device:
You must expect three times the memory requirement for the follow-
ing message variants:
1. Messages containing 2 variables
2. Messages with 'Appear/Disappear'
3. Messages with acknowledgment ('Appear/Disappear' active).
4. Messages whose first variable has a size of greater than 4 bytes
CPU in Operating Device
Z80 32 Bit RISC
Available Memory Space in Bytes About
116000
About 116000 for FW version 1.07 or lower
About 147000 for FW version 1.08 or higher
Memory Requirement per Mes-
sage (=1 Memory Location)
24 Bytes 32 Bytes
Memory Requirement per Data
Set without User Data
33 Bytes 44 Bytes
Fig. 5-62: Memory space / memory requirement