ABB NMBA-01 - Exception Codes; Data Update

Chapter 6 – Communication
NMBA-01 Installation and Start-up Guide 6-3
Exception Codes The NMBA-01 supports the Modbus exception codes shown in
Table 6-2 .
Table 6-2 Exception Codes.
Data Update
The NMBA-01 module has been designed for time-optimised, reliable
data transfer between the Modbus network and the drive.
Table 6-3 Function Codes.
Data set registers are updated in a fast cyclic interval. Updating of
parameter registers happens in a slower interval. In case of a single
parameter register read or write request, the parameter value is
updated directly from the drive’s internal memory. In case of a multiple
parameter register read or write request, the parameter values are
updated from the internal memory of the NMBA-01.
Code Name Reason
01 ILLEGAL FUNCTION Unsupported Command.
02 ILLEGAL DATA
ADDRESS
Address does not exist or is read/write
protected.
03 ILLEGAL DATA VALUE Value is outside min-max limits.
Parameter is read-only.
04 SLAVE DEVICE
FAILURE
Reading a multiple parameter register,
which includes one or more read protected
parameters.
06 SLAVE DEVICE BUSY DDCS channel timeout.
Code Name Meaning
03 Read Holding Registers Reads the binary contents of holding
registers (4X references) in the slave.
06 Preset Single Register Presets a value into a single holding register
(4X reference). When broadcast, the
function presets the same register reference
in all attached slaves.
16
(10 Hex)
Preset Multiple Regs Presets values into a sequence of holding
registers (4X references). When broadcast,
the function presets the same register
references in all attached slaves.
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