27 – 454 HEIDENHAIN Service Manual iTNC 530
MC 422C / 5 position encoder inputs and CC 422 with 6 control loops
Connection overview Connector Function
X1 to X5 Position encoder
X35 to X38 Not occupied
X15 to X20 Speed encoder
X51 to X60 PWM output
X8 Nominal value output, analog
X12 TS triggering touch probe
X13 TT triggering touch probe
X23 Handwheel
X26 Ethernet data interface
X27 RS-232-C/V.24 data interface
X28 RS-422/V.11 data interface
X141, X142 USB interface
(X142 at bottom of unit)
X30 24 V spindle reference signal
X34 24 V for control-is-ready signal
output
X41 PLC output
X42 PLC input
X44 24 V PLC supply voltage
X45 Operating panel
X46 Machine operating panel
X147 PLC expansion
X48 PLC analog input
X149 BF 150 (BF 120) visual display unit
X69 Power supply
X121 Reserved
X165, X166 Reserved
X74 5 V power supply
X150 Axis-specific drive enabling (at
bottom of housing)
B Signal ground
Ground lead (YL/GN)
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