IFM AL1340 - Page 59

IO-Link Master with Modbus TCP Interface DataLine 4 Ports IP 65 / IP 66 / IP 67
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GET request
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Using the GET method the user has read access to a data point.
The syntax of the request to the IoT Core is:
http://ip/datapoint/service
Parameter
Description
ip
IP address of the IoT interface
data_point
Data point which is to be accessed
service
Service
The syntax of the return of the IoT Core is:
{
"cid":id,
"data":{"value":resp_data},
"code":diag_code
}
Parameter
Description
id
Correlation ID for the assignment of request and return
resp_data
Value of the data point; depending on the data type of the data point
diag_code
Diagnostic code (→ IoT Core: Diagnostic codes (→ S. 62))
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Example: GET request
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Request (via browser):
http://192.168.0.250/devicetag/applicationtag/getdata
Response:
{
"cid":-1,
"data":{"value":"AL1340"},
"code":200
}