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Error
code
HTTP
code
Message
Note
206
400
JSON data value out of bounds
An array/string was accessed whose max‐
imum length was exceeded.
207
400
deviceAlias is not unique
208
400
POST request without content
Error during resource access
301
404
Resource not found
E.g. incorrect URL
302
404
masterNumber not found
303
404
portNumber not found
304
404
deviceAlias not found
305
400
Query parameter name invalid
306
400
Query parameter value invalid
307
400
Port is not configured to IO-Link E.G.: IOLINK_MANUAL or IOLINK_AUTOS‐
TART mode
308
404
IO-Link device is not accessible
E.g. not connected or communication
error
309
404
IO-Link parameter not found
310
404
IO-Link parameter access not
supported by the device
311
400
IO-Link parameter access error
The additional “iolinkErrorCode” and
“iolinkErrorMessage” fields contain the
IO-Link error code and the event text from
the ErrorTypes table.
312
404
IO-Link parameter name is not
unique
Please use the format [Name]_[Index].
DataStorage error
401
400
Data storage mismatch
No match between configured device and
data from data memory. Check device ID.
Processing error in the process data
501
400
I/Q is not configured as DIGI‐
TAL_OUTPUT
Writing process data on I/Q is not possi‐
ble
502
400
C/Q is not configured as DIGI‐
TAL_OUTPUT
Writing process data on C/Q is not possi‐
ble
503
400
IO-Link device has no output
process data
Error in the payload
701
400
Data set incomplete
702
400
Data set not applicable
The entire data set is denied
703
400
Data set combination incompati‐
ble
The entire data set is denied
8.2.2
MQTT client
The SIG350 provides a MQTT interface with JSON data format for accessing the data of
the IO-Link Master and of the connected devices. These operating instructions provide
an overview of the available messages and the access mechanisms.
8
OPERATION
44
O P E R A T I N G I N S T R U C T I O N S | Sensor Integration Gateway - SIG350
8027836./2022-06-10 | SICK
Subject to change without notice