Coded Output Of Spindle Speed - HEIDENHAIN TNC 426 PB/M Technical Manual

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6.12.4 Coded Output of Spindle Speed

If you have selected speed-code output in MP3010 (entry 1 or 2), an S code is

entered in W258. You must output the speed code to the spindle drive

through PLC outputs.

If the speed code is changed, the NC sets the S strobe (M4071). If you

acknowledge the S code with M4091, the NC program is continued and the S

strobe (M4071) is reset by the NC.

If required, the programmed spindle speed is rounded off to the next standard

value by the NC and given in S code as per ISO 6983. (see S-code table below).

Speeds of 0 to 9000 rpm are possible:

Specify in MP3020 the speed range and the speed increment. The S code

for the minimum speed is saved in W1008.

Minimum speed = 1 rpm (S code 20)

Maximum speed = 1000 rpm (S code 80)

Speed increment = 2:

MP3020 = 20802

Speed range for S code output

xx: S code for minimum speed

yy: S code for maximum speed

z: Speed increment

Strobe signal for S code

Acknowledgment of S code

S code for minimum speed

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