M+Strprocessing_Jsonserialize_F (Construction Of Json String); Overview; Labels - Mitsubishi Electric MELSEC iQ-F Series Manual

3.2
M+StrProcessing_JSONSerialize_F (Construction
of JSON String)

Overview

This FB constructs the JSON string by specifying the Key string and Value string.
M+StrProcessing_JSONSerialize_F
(1)
B:i_bEN
(2)
UD:i_udJSONAddr
(8)pb_st30Member

Labels

Input labels
No. Label
(1) i_bEN
(2) i_udJSONAddr
*1 The setting range differs depending on the "Device/Label Memory Area Setting" in "CPU Parameter".
Output labels
No. Label
(3) o_bENO
(4) o_bOK
(5) o_bErr
(6) o_uErrId
(7) o_uJSONLength
Public variable (input)
No. Label
(8) pb_st30Member
3 DETAILS OF FB LIBRARIES
16

3.2 M+StrProcessing_JSONSerialize_F (Construction of JSON String)

o_bENO:B
o_bOK:B
o_bErr:B
o_uErrId:UW
o_uJSONLength:UW
Name Data type
Execution Bit
command
Start address of Double word [unsigned]
JSON string
storage location
Name Data type
Execution status Bit
Normal completion Bit
Error completion Bit
Error code Word [unsigned]/bit string [16
bits]
Number of Word [unsigned]/bit string [16
characters in bits]
JSON string
Name Data type
Member list Member (0..29)
(3)
(4)
(5)
(6)
(7)
Import Setting range
Always On, Off
At start of Valid device
*1
FB range
Default value
Off
Off
Off
0
0
Setting range

Description
On: FB starts.
Off: FB does not start.
Specify the start address of the file register
where the constructed JSON string is
stored.
Description
On: The execution command is on.
Off: The execution command is off.
The on state indicates that the FB has been
completed successfully.
The on state indicates that an error has
occurred in the FB.
The error code of an error that occurred in the
FB is stored.
The number of characters (bytes) in the
constructed JSON string is stored.
Description
Specify the member information about the Key
to be constructed.
For details on the structure, refer to the
following.
Page 8 List of Structures