Read from PHC10-3 PLUS to indicate an error in the PH10 system. Pull down to 0 V to indicate a STOP condition external to the PH10 PLUS system.

2

PPOFF

PPOFF is an active low inhibit signal which can be set by the CMM computer or the PHC10-3 PLUS. PPOFF is overridden by the use of the STOP signal.

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3

0 V

This the common reference and return path for all signals.

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4

LED anode

This is a constant current input, normally from the interface to illuminate the head LED.

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5

Probe signal

This pin and pin 9 transmit the probe output signals from the PHC10-3 PLUS when a multiwire cable is not in use. As these signals have not been interfaced, it is important that the PICS cable between the PHC10-3 PLUS and the interface is less than 0.5 m (1.6 ft) otherwise interference from other PICS signals can occur.

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6

Reserved

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7

PDAMP

PDAMP is an active low signal which can be set by the CMM computer, the PHC10-3 PLUS or by the optional HCU2. PDAMP can influence an interface by reducing electronically the sensitivity of a strain gauge based probe. It can inhibit a Renishaw interface, when standard touch trigger probes are in use, until the probe has been continuously triggered for at least 5 ms. The signal can be asserted by the CMM computer to reduce the sensitivity of the probe. This will reduce unwanted triggers during CMM acceleration, or vibration during position moves, whilst maintaining crash protection.

Pull down to 0 V to partially inhibit the probe during rapid moves.

8

LEDOFF

This signal is not asserted by the PHC10-3 PLUS, but it responds to LED OFF by switching the head LED off.

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9