CI856 and TP856 – S100 I/O Interface Appendix A Hardware Units
174 3BSE 027 941 R301
Indicators
Table 49. CI856 – S100 I/O LED Indicators
Designation/Color Function
F(ault) /Red Unit error detected. Controlled by CI856 Software.
Set by the Hardware during controller Reset.
Cleared by the CI856 Software after successful
startup.
R(un) /Green Operating. Controlled by the Control Software.
Cleared by the Hardware during controller Reset.
TO /Yellow Flashes at S100 I/O access time-outs.
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