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RS232 setup
RS232 connector pinouts
The PHC10-3 PLUS communicates with the CMM computer via the RS232 cable as shown in the table below:
Pin
Signal
1
Screen
2
Transmitted data (Tx) to CMM computer
3
Received data (Rx) from CMM computer
4
RTS (request to send) to CMM co12 V after initialisation
routine completed
5
CTS (clear to send) from CMM computer
CMM computer de-asserts CTS to halt PHC10-3 PLUS transmissions
Connect pin 5 to pin 20 if CTS is not output from CMM computer
7
Signal ground (common)
20
DTR (data terminal ready) to CMM computer signifies PHC10-3
PLUS power ON condition
Baud rate selection
The baud rate is set using switches 1 to 3 as shown in the table below:
Baud rate
Switch 1
Switch 2
Switch 3
300
DOWN
DOWN
DOWN
600
UP
DOWN
DOWN
1200
DOWN
UP
DOWN
2400
UP
UP
DOWN
4800
DOWN
DOWN
UP
9600
UP
DOWN
UP
19200
DOWN
UP
UP
NOTE:
To implement any changes press the "reset" button on the rear rear panel. Failure to do so will mean the changes do not
take effect.
PHC10-3 PLUS installation guide
www.renishaw.com
Issued 12 2021
26