HEIDENHAIN TNC 370D - Manual (Page 13)

3.7 Connection Overview
3.7.1 LE 370 D
X1
to
X4 Position
encoder
X6 Encoder for spindle position
X8
Nominal value output
X12
Triggering touch probe for workpiece
measurement
X13
Triggering touch probe for tool measurement
X21
RS-232-C/V24 data interface
X23 Handwheel input
X30
Reference signal for spindle
X41 PLC output
X42 PLC input
X44 PLC power supply
X43
Flat-panel display BF 370 B
X45 TNC keyboard
X46 Machine operating panel
X47 PLC expansion PL410B/PL405B
X48 PLC analog input
X31
NC power supply
B Signal ground
Protective ground (YL/GN)
3–10 TNC 370 D Mounting and Electrical Installation July 02