Function Details - Mitsubishi Electric MELSEC iQ-F Series Manual

Function details

Applicable hardware and software
Module
FX5S CPU module
FX5UJ CPU module
FX5U/FX5UC CPU module
Basic specifications
Item
Language to use
Number of steps
Points of labels used
Points of index register used
Points of file register used
FB dependency
FB compilation method
FB operation
Function description
• Turning i_bEN (execution command) on searches for s32Key (Key string) of pb_st30Member (member list) in the JSON
string and acquires the corresponding Value string. Refer to the following for the procedure to acquire the Value string from
the JSON string.
Page 12 Usage procedure
• In the FB, the JSON string is converted to the same format as pb_st30Member (member list) and analyzed. More than 30
members result in error completion, causing an error (202H) to occur. (Page 12 Usage procedure)
• After all Value strings corresponding to s32Key (Key string) specified in pb_st30Member (member list) have been acquired,
o_bOK (normal completion) turns on.
• If an error occurs during acquisition of the Value string, o_bErr (error completion) turns on and processing of the FB is
interrupted. In addition, an error code is stored in o_uErrId (error code). (Page 15 Error code)
Firmware version
1.00 or later
1.032 or later
1.271 or later
Description
Ladder
3232 steps
The number of steps of the FB embedded in a program depends on the CPU module used, the input/output definitions,
and the option setting of GX Works3. For the option setting of GX Works3, refer to the following.
GX Works3 Operating Manual
• Label: 8824 (Word)
• Latch Label: 0 (Word)
The points of labels embedded in a program depend on the CPU module used, the devices specified for arguments, and
the option setting of GX Works3. For the option setting of GX Works3, refer to the following.
GX Works3 Operating Manual
• Index register: 1 point, Number of the device used (Z9)
• Long index register: 0 points
When using an interrupt program, do not use this index register in the interrupt program.
0 points
No dependency
Subroutine type
Pulse execution type (multiple scan execution type)
3.1 M+StrProcessing_JSONDeserialize_F (Acquisition of JSON String)
Engineering tool
GX Works3 Version 1.087R or later
GX Works3 Version 1.087R or later
GX Works3 Version 1.087R or later
3 DETAILS OF FB LIBRARIES
3
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