Pcp Channel Objects - Bosch Rexroth ID 40 Manual

8.3.2

PCP channel objects

Object Communication
index object
5FF0 Set parameters for
unbuffered prefetch
5FF1 Configure
unbuffered prefetch
5FF2 Set parameters for
buffered prefetch
5FF3 Configure buffered
prefetch
5FF4 Read prefetch
buffer
5FF5 Read and write data
directly
5FF6 Set parameters for
pretransmit
Description
The addressed data area is added to the
unbuffered prefetch. The data is included in
the event-oriented data exchange in order
of definition. This means the data defined
first are added to the lowest address in the
buffer regardless of its address in the data
carrier
Parameters for the unbuffered prefetch can
set or all parameterized data areas can be
deleted. The unbuffered prefetch is only ex-
ecuted once the parameters have been set
The addressed data area is added to the
buffered prefetch. Once the prefetch is
executed, the data is placed in the prefetch
buffer in the order of the commands. This
means the data defined first are added to
the lowest address in the buffer regardless
of its address in the data carrier
Parameters for the buffered prefetch can
set or all parameterized data areas can be
deleted.
The buffered prefetch is only executed once
the parameters have been set
The data block indicated in subindexes 1
and 2 are read from the prefetch buffer.
Subindex 1 is not an SLK address, but ad-
dresses the start of the data block in the
prefetch buffer
Reading subindex 3 returns the data in the
data block indicated in subindexes 1 and 2.
Writing to subindex 3 triggers a data entry
in the data block indicated in subindexes
1 and 2.
The indicated data area is added to the
pretransmit.
This command can be selected multiple
times, whereby the various areas can
overlap
Subindexes
Subindex 1:
SLK address
Subindex 2:
No. bytes, high byte always 0
Subindex 0:
0: Begin setting parameters
for unbuffered prefetch
1: Finish setting parameters
for unbuffered prefetch
4: Delete unbuffered
prefetch
Subindex 1:
SLK address
Subindex 2:
No. bytes, high byte always 0
Subindex 0:
0: Begin setting parameters
for buffered prefetch
1: Finish setting parameters
for buffered prefetch
4: Delete buffered prefetch
Subindex 1:
Byte address in prefetch
buffer
Subindex 2:
No. bytes, high byte always 0
Subindex 3:
Payload
Subindex 1:
SLK address
Subindex 2:
No. bytes, high byte always 0
Subindex 3:
Payload
Subindex 1:
SLK address
Subindex 2:
No. bytes, high byte always 0
Subindex 3:
Data in pretransmit to be
written
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