Mitsubishi Electric RD77MS16, User Manual

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3 MAJOR POSITIONING CONTROL
3.2 Setting the Positioning Data
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Changing to a new current value using the current value changing start No. (No. 9003)
In "current value changing" ("[Cd.3] Positioning start No." = 9003), "[Md.20] Current feed value" is changed to the address set
in "[Cd.9] New current value".
■ Operation chart
The current value is changed by setting the new current value in the current value changing buffer memory "[Cd.9] New
current value", setting "9003" in the "[Cd.3] Positioning start No.", and turning ON the positioning start signal.
■
RD77MS4 operation example
■ Restrictions
• The error "Outside new current value range" (error code: 1997H) will occur if the designated value is outside the setting
range when "degree" is set in "Unit setting".
• The error "Software stroke limit +" (error code: 1993H) or "Software stroke limit -" (error code: 1995H) will occur if the
designated value is outside the software stroke limit range.
• The current value cannot be changed during stop commands and while the M code ON signal is ON.
• The M code output function is made invalid.
The new current value can be changed using the current value changing start No. (No. 9003) if "0: Positioning
control is not executed" is set in "[Pr.55] Operation setting for incompletion of home position return" and home
position return request flag is ON.
■ Current value changing procedure
The following shows the procedure for changing the current value to a new value.
1.
Write the current value to "[Cd. 9] New current value".
2.
Write "9003" in "[Cd. 3] Positioning start No.".
3.
Turn ON the positioning start signal.
Positioning start signal
[Y10, Y11, Y12, Y13]
[Md.20] Current feed value 50000 0
OFF
ON
Current value changes to the positioning address designated
by the current value changing buffer memory.
The above chart shows an example
when the positioning address is "0".