Meaning Of The Leds On The Um 1Xx - HEIDENHAIN TNC 410 M Technical Manual

6.1.33 Meaning of the LEDs on the UM 1xx

LED Meaning
READY Power module is ready
SH 1 DSP error, PLC error with Emergency Stop,
control hardware or software error
SH 2 No drive enable (e.g. by the PLC, active via
external signal or SH1)
TEMP >> Warning signal for IGBT temperature too high
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Signal direction Signal
UM → LE, CC
RDY
LE, CC → UM
SH1
LE, CC → UM
SH2
UM → LE, CC
ERR