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Rexroth Frequency Converter EFC x610
Series
Register Address
0x7F00
0x7F01
0x7FA0
0x7FE0
0x7FF0
Tab. 12-135: Overview of special register addresses
1. When a Modbus/TCP client established a new connection to
the MEP card, output process data status initially is set invalid
at the MEP. The output data status changes to valid, as soon as
all parameters at output process data list are written at least
once. The output data status then remains valid, until the TCP
connection is closed or terminated.
2. Special Register Addresses mentioned above, only can be used
without any offset. Example: It is not allowed to use address
0x7FF2 for accessing second output process data item.
Exception Codes
With Modbus/TCP, in error cases, the MEP card returns Exception Codes at the
Modbus response telegram. The Exception Codes are listed in the following ta-
ble:
Exception Code
1
Illegal function
2
Illegal data address
3
Illegal data value
Server device fail-
4
ure
Tab. 12-136: Exception codes
12.20.9 Diagnosis
Control word H0.00
Frequency command value H0.10
Status word H0.01
Input Process Data Image as specified by H3.30
Output Process Data Image as specified by H3.31
Name
Unknown Function Code, transaction contained a Modbus
Function Code not supported by the MEP card.
Access to unknown address
●
Error occurred while Function Code 43 transaction
●
Invalid read/write length value at Modbus transaction
●
Malformed request telegram
●
Invalid object ID at Function Code 43 transaction
●
Read / Write access failed
Functions and Parameters
Contents
Meaning/Possible Causes
R912005854_Edition 09 Bosch Rexroth AG
433/653
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