94 PROFINET IO – Communication protocol
Example 5: Determining the source of the process data read
from the drive
PROFIdrive parameter 916 (394h) can be used to define which
data is read cyclically from the drive as application-specific process
data. In the example below, the parameter is used to determine
which drive parameter the contents of PZD3 are taken from.
Subindex (IND) defines which process data word the required data
is transmitted in.
• DP-V1 Write request:
DP
header
01 01 B0 2F 0A 0B 01 01 01 10 01 03 94 00 03
DP trailer
DP-V1 Response PROFIdrive V3 Parameter Channel
Slot number
Subslot number
Index
Data length
Request reference
Request ID (01h = Read)
Number of parameters
Drive object ID
Number of elements
Attribute (10h = Value)
Parameter index
Subindex
DP-V1_Write_request_3.pdf
• DP-V1 Read response:
PROFINET IO – Communication protocol 95
• DP-V1 Read response:
Value indicates the source of PZD3 as drive parameter 12.05
(0C.05h).
Diagnostic and alarm mechanism
The FENA adapter module has mechanisms for sending alarms
and saving diagnostics data to a fault buffer. An alarm is triggered
if the host or drive has faults in communication or operation. The
alarm and fault buffer mechanisms are enabled by default and can
be disabled with a configuration parameter (21 Alarm disable on
page 13).
DP
header
01 01 B0 2F 08 0B 01 01 01 42 01 0C 05
DP
trailer
DP-V1 Response PROFIdrive V3 Parameter Channel
Subslot number
Index
Data length
Request reference (mirrored)
Response ID
Drive object ID (mirrored)
Number of parameters
Format (42h = Word)
Number of values
Value of error
values
Slot number
DP-V1_Read_response_3.pdf
Value indicates the source of PZD3 as drive parameter 12.05 (0C.05h).
Diagnostic and alarm mechanism
The FSPS-21 module has mechanisms for sending alarms and saving diagnostics data to
a fault buffer. An alarm is triggered if the host or drive has faults in communication or
operation. The alarm and fault buffer mechanisms are enabled by default and can be disabled
with a configuration parameter, see FSPS-21 configuration parameters – group A (group
1) (page 48).
￭ Alarm mechanism
When a fault situation occurs, the adapter module sends an alarm notification, which the
master station has to acknowledge. Alarm notifications can be acknowledged, viewed and
handled, for example, with Siemens S7 blocks OB82, OB83, OB86 and OB122.
PROFINET IO – Communication protocol 107
To Next Page
Loading...
