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Exception Codes
Global Data
Installation and Start-up Guide for NMBP-01
The ACS 600 supports the standard Modbus Plus exception codes. These are
shown in Table 6-2 below.
Code
Name
01
ILLEGAL FUNCTION
02
ILLEGAL DATA
ADDRESS
03
ILLEGAL DATA VALUE
Table 6-2 Exception Codes.
The ACS 600 supports Global Data on the Modbus Plus network. Global data
is a service on Modbus Plus, intended for fast control or actual value transfer.
Every node on the Modbus Plus network can ' broadcast' with the token
pass data to other nodes on the network. This Global Data is fixed in length (0
– 32 words), and the data contents are defined by the sending station.
ACS 600 can receive 0 – 3 words from stations on the network, and it can
transmit 0 – 3 words to the network. The global data can be used for receiv-
ing or transmitting information contained in the data sets in the drive.
The Global Data is configured using the setup parameters in Group 51. See
Chapter 5 – Programming, Group 51 Modbus Plus for details.
Chapter 6 – Communication
Meaning
The function code received in the query is not
an allowable action for the slave. If a Poll
Program Complete command was issued, this
code indicates that no program function
preceded it.
ACS 600 : Unsupported Command.
The data address received in the query is not
an allowable address for the slave.
ACS 600 : Address outside groups
A value contained in the query data field is not
an allowable value for the slave.
ACS 600 : Value outside min-max limits
ACS 600 : Parameter is read-only
6-5
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