Appendix
96
11.3.2 Feedback on invalid entries
If the device receives an invalid data packet, it responds with an exception
response. The following exceptions are recognized by the device.
Code
Name
Explanation
01
Illegal function
The received function code is not supported by
the device. An attempt was made to set a value
although the device is not in remote control
mode.
02
Illegal data address
The received data address is not supported by
the device. The combination of data address
and data length is not supported by the device
(e.g. only one register of a value that includes
several registers). The register cannot be
changed.
03
Illegal data value
The set value is outside the permitted value
range.
11.3.3 Function codes
Name
Code
(dec.)
Code
(hex.)
Explanation
Read Holding
Registers
03
03
Read several holding registers
Write Single
Registers
06
06
Write a single holding register
Write Multiple
Registers
16
10
Write several consecutive holding registers. This
function can be used to set values that use more
than one register.
Read/Write
Multiple
Registers
23
17
Combination of read and write operation
Read Input
Register
04
04
Summary of Contents for Magio MX
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