Weidmuller WI-I/O-9-U2: Wireless Mesh I/O & Gateway User Manual V1.2.2 - Manual (Page 118)

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65286 FF06
Slave Device
Busy
Specialized, use in conjunction with programming
commands.
The server (or slave) is engaged in processing a long –
duration program command. The client (or master)
should retransmit the message later when the server (or
slave) is free.
65288 FF08
Memory
Parity Error
Specialized, use in conjunction with function codes 20
and 21 and reference type 6, to indicate that the
extended file area failed to pass a consistency check.
65290 FF0A
Gateway
Path
Unavailable
Specialized, use in conjunction with gateways. Indicates
that the gateway was unable to allocate an internal
communication path from the input port to the output
port for processing the request. Usually means that the
gateway is misconfigured or overloaded.
65291 FF0B
Gateway
Device Failed
to Respond
Specialized, use in conjunction with gateways. Indicates
that no response was obtained from the target device.
Usually means that the device is not present on the
network
65024 FE00
Invalid
Response
from Slave
Command type or Slave address did not match request
(probably another unit)
64512 FC00 Server Offline Couldn’t connect to Modbus TCP server
63488 F800
Invalid Local
Memory
Address
Local address invalid in command - Memory location
does not exist or is not initialised.
65535 FFFF
No Response
to the Poll
No response to poll message