Mitsubishi Electric MELDAS 60 Series User Manual

9. Mmachine Error Compensation
9.2 Setting Compensation Data
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9.2 Setting Compensation Data
Compensation data can be set according to either absolute or incremental system.
"#4000:Pinc" 0: Absolute system
1: Incremental system
(1) Absolute system
Feed from the reference point to each division point is executed as shown in Fig. 2. 1. The following is
obtained at this time. Set it as the compensation amount.
(Specified position - Real machine position) × 2 (Unit of output)
For example‚ assume that the feed from the reference point to the +100mm position is executed. Also‚
assume that the real machine position is 99.990mm. In this case‚ the following value is defined as the
compensation amount used at the +100mm position:
(100000 - 99990) × 2 = 20 pulses
The resultant value is defined as the compensation amount. Assume that the real machine position
resulting when feed to the -100mm position is executed‚ is -99.990mm. In this case‚ the following value is
defined as the compensation amount used at the -100mm position:
(-100000 - (-99990)) × 2 = -20 pulses
+99.990
+100
Compensation
amount: 20
pulses (-10µm)
-99.990
-100
Compensation
amount: -20
pulses (10µm)
Fig. 2. 1
(2) Incremental system
Fig. 2. 2 contains a machine position that is placed in the positive direction with respect to the reference
point. Assume that feed from division n-1 to n (division interval) is executed. In this case‚ the following
value is defined as the compensation amount:
(Division interval - Actual movement distance) × 2 (Unit of output)

Mitsubishi Electric MELDAS 60 Series Specifications

General

Control Type	CNC
Spindle Control	Yes
Series	60 Series
Interpolation	Linear and circular
Display	LCD
Communication Interface	RS-232
Memory Capacity	Varies depending on model
Operating Temperature	0°C to 45°C
Storage Temperature	-20°C to 60°C