IFM AL1340 - Page 60

IO-Link Master with Modbus TCP Interface DataLine 4 Ports IP 65 / IP 66 / IP 67
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POST request
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Using a POST request the user has read and write access to a data point.
The syntax of the request to the IoT Core is:
{
"code":"code_id",
"cid":id,
"adr":"data_point/service",
"data":{req_data},
"auth":{"user":"usr_id","passwd":"password"}
}
Field
Parameter
Description
code
code_id
Service class
 request
Request
 transaction
Transaction
 event
Event
cid
id
Correlation ID for the assignment of request and response; vom Nutzer frei vergebbare
Kennung
adr
data_point
Data point of the element tree which is to be accessed
service
Service to be performed (→ Overview: IoT services (→ S. 119))
data*
req_data
Data to be transferred to the IoT Core (e.g. new values); syntax depending on the service
auth**
usr_id
user name (base64 coded); default value: administrator
password
password (base64 coded)
* = optional; only required for services, that submit data to the IoT core (e. g. setdata)
** = optional; only required, if security mode is activated
The syntax of the return of the IoT Core is:
{
"cid":id,
"data":{resp_data},
"code":diag_code
}
Field
Parameter
Description
cid
id
Correlation ID for the assignment of request and response (see request)
data*
resp_data
Value of the data point; syntax depending on the service
code
diag_code
Diagnostic code (→ IoT Core: Diagnostic codes (→ S. 62))
* = optional; only required for services, that receive data from the IoT core (e.g. gettdata)