Table of Contents
Advertisement
Bosch Rexroth AG
Periodical Data Communication
Word
Identifier
2
nd
IND
VALUE
3
rd
high
VALUE
th
4
low
Tab. 6-2: Response data frame in PKW area (from slave to master)
Error Message after Execution Failure in PKW Area
●
Error code
Illegal command code in PKW
0×0002
area
Illegal parameter address in PKW
0×0003
area
Illegal parameter value in PKW
0×0004
area
Communication fault in PKW
0×0005
area
Tab. 6-3: Error code
Communication line which is subject to hardware disconnection
fault will also lead to execution failure in PKW area. The error code
will be given in status word of PZD area.
Example of parameter operation in PKW area
●
In real application, the PROFIBUS adapter communicates with the master
through messages in PPO structure. Among the 5 PPOs stated in
"PPO Data Type" on page
PZD area. In following examples, PKW area data frames are taken from complete
PPO message to describe its request and response data frames. The following
examples are based on Bosch Rexroth Frequency Converter Fe and PROFIBUS
adapter.
22/35
Bit
Value
Index serial number of function code parameter within
15 – 8
xxH
the group
7 – 0
0
reserved, default is 0
15 – 0
0
reserved, default is 0
1. When reading parameters, it returns to read pa-
2. When modifying parameters, it is modified value.
15 – 0
xxxxH
3. It returns 0 in case of no operation.
4. It returns error code when PKW area execution
Name
Command code (ID bit15 - 12) not 0, 1 or 2
Illegal function code group No. or index serial No. of
parameters within the group
Function code is protected and cannot be modified;
Parameter value exceeds limit; Function code pa-
rameter that cannot be modified; Factory password
is locked.
Line interference
20, PPO1, PPO2 and PPO5 apply both PKW area and
PROFIBUS-DP Bus Adapter
Description
rameter value.
fails.
Possible reasons
DOK-RCON01-PROFIBUS***-IB04-EN-P
chapter 6.1
Advertisement
Table of Contents
