Technical Documentation
opti-check
v2.8.2-K11
307/332
ipf electronic GmbH
Lüdenscheid, Germany
15.5.2.6.3
Data elements for handshake
Data element
Direction
Type
Length
(byte)
Description
Handshake for
Input data
from the
controller
(Output:
Activation and
HS ACK)
PLC
device
UINT8
1
Handshake for input data
Bit 0
1 if "simple" handshake
should be activated, otherwise 0
Bit 1
1 if handshake with acknowledgement
should be activated, otherwise 0
Bits 2..3
Reserved (always 0)
Bit 4
Handshake act. flag - must always
be set to the value of the most recent
handshake flag received
therefore acknowledges receipt for
the
device
(if handshake with acknowledgement
is activated)
Bits 5..7
Reserved (always 0)
Handshake for
Input data
from the
controller
(Input: ACK
for activation
and HS control)
Device
PLC
UINT8
1
Handshake for input data
Bit 0
1 if "simple" handshake
was activated (ACK for activation),
otherwise 0
Bit 1
1 if handshake with acknowledgement
was activated (ACK for activation),
otherwise 0
Bits 2..3
Reserved (always 0)
Bit 4
Handshake flag - is
inverted by the device simultaneously
or after each new, valid
piece of data is sent and
signalises with the edge that
this data can be
transferred (if handshake is activated)
Bits 5..7
Reserved (always 0)
