14
3 POSITIONING FB
3.2 M+FX5UCPU-Positioning_StartPositioning
FB details
Item Description
Available device CPU module FX5U CPU, FX5UC CPU
Engineering tool GX Works3 Version 1.025B or later
Language Ladder diagram
Number of basic steps 187 steps
The number of FB steps integrated in the program varies depending on the CPU module used, the input/output definition, and
the setting options of GX Works3. For the setting options of GX Works3, refer to GX Works3 Operating Manual.
Processing • Activates from the table data specified by i_uStartNo (Positioning activation number) using the multiple table operation
(DRVTBL) instruction, by turning i_bEN (Execution command) on.
• If pbi_bTableExeMethod (Table execution method) is on, continuous operation of the multiple table operation (DRVTBL)
instruction is performed.
• If pbi_bTableExeMethod (Table execution method) is off, stepping operation of the multiple table operation (DRVTBL)
instruction is performed together with an added function for automatic table transfer.
• If the set value of the target axis is outside the setting range, o_bErr (Error completion) turns on and the processing of this
FB is aborted. In addition, the error code 100 (hexadecimal) is stored in o_uErrId (Error code). For the error code, refer to
Page 17 Error code.
• If the set value of the positioning activation number is outside the setting range, o_bErr (Error completion) turns on and the
processing of this FB is aborted. In addition, the error code 101 (hexadecimal) is stored in o_uErrId (Error code). For the
error code, refer to Page 17 Error code.
• If positioning has been activated for the target axis, o_bErr (Error completion) turns on and the processing of this FB is
aborted. In addition, the error code 201 (hexadecimal) is stored in o_uErrId (Error code). For the error code, refer to
Page 17 Error code.
• If an error occurs when positioning is activated or has been activated, o_bErr (Error completion) turns on and the processing
of this FB is aborted. In addition, the error code is stored in o_uErrId (Error code). For the error codes, refer to MELSEC
iQ-F FX5 User's Manual (Positioning Control - CPU module built-in, High-speed pulse input/output module).
FB compilation method Macro type
FB operation Pulsed execution (multiple scan execution type)
Output pulse
frequency (Hz)
Tabl e 1
positioning address
Tabl e 2
positioning address
Tabl e 3
positioning address
Tab le be in g e x ec u te d
0 0
Time
Dwell time
12 3
Instruction execution
complete
Tab le tr a ns f er
command
User specified normal
completion flag
Output pulse
frequency (Hz)
Tabl e 1
positioning address
Tabl e 2
positioning address
Tab le be in g e x ec u te d
0 0
Time
Dwell time Dwell time
12
Instruction execution
complete
Tab le tr a ns f er
command
User specified normal
completion flag
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