HEIDENHAIN TNC 122 Technical Manual - Manual (Page 11)

10
TNC 122 7 Connections 4/97
7 Connections
L1 N
X41(EXT)
X21
B
X1
X2
X3
X51
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
NC xxx xxx xx
PLC xxx xxx xx
X1 = Encoder 1
X2 = Encoder 2
X3 = Encoder 3
X21 = RS-232-C/V.24 data interface
X41 = PLC inputs/PLC outputs/analog output/feed rate override/24 V PLC
X51 = Power supply
B = Signal ground
Danger to internal components!
Do not engage or disengage any connections while the unit is under power.
Interfaces X1, X2, X3, X21 comply with the recommendations in EN 50 178 for separation
from line power.
The outputs at connection X41 are metallically isolated from the device electronics by
means of optocouplers.