Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 169

■Response specifications
The following table lists the parameters used for the response.
Parameter Data type
name
RET string
DATA string
The format of the response data is JSON.
Ex.
Response data of the device write CGI
{
"RET" : "0",
"DATA" : [
"100"
]
}
The above response is transferred in the following format on a message.
{"RET":"0","DATA":["100"]}
When the execution result is abnormal, data is not written and only the RET is transferred.
{"RET":"4031"}
Description
Execution result (hexadecimal string)
0000: Normal
0001: Not logged on
0002: No permission (A user without device write permission executed the CGI.)
0005: Incorrect request source (Referer)
4005: Number of points over
4030: Incorrect device type
4031: Out of device range
4041: Specified buffer memory number + specified number in the transfer points is out of buffer memory range error
4043: Error of when the specified module does not exist
4080: CGI parameter error
4032: Device specification error
The read value of the target device (array)
Hexadecimal string
1 FUNCTIONS
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1.12 Web Server Function
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