HEIDENHAIN iTNC 530 Service Manual page 419

Touch probe with cable:
Two red LEDs (offset by 180°) on the TS 220 indicate that the stylus is deflected:
In touch probes with cable (not in those with infrared interface) the Ready signal is bridged.
Checking the
This means that the Ready signal must always be present if a touch probe with cable is
"Ready" bridge
connected.
Proceed as follows to check the Ready bridge:
Assignment at the interface X12 (D-SUB, 15-pin, 2-row):
MC 42x(B)
Female
1
2
3
4
5
6
7
8
9
10
11 to 15
Hsg.
July 2010
Shut down the control and switch off the machine.
Disconnect the keypad cable on connector X12 from the MC.
Use a multimeter which you set to "beep" mode or to ohm measurement.
Apply the needle tips to the pins 3 and 5 of the touch probe cable. --> A beep must be heard
or a low ohmic value displayed.
Assignment X12 (TS)
0 V (internal shield)
Do not assign
Readiness
Start
+15 V ±10% (U
+5 V ± 5% (U
Battery warning
0 V (U
Trigger signal
Trigger signal
Do not assign
External shield
), max. 100 mA
P
), max. 100 mA
P
)
N
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