I anhang: post-codes – BECKHOFF CB4055 User Manual
Page 83
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Anhang: Post-Codes
Beckhoff New Automation Technology CB4055
page 83
I Anhang: Post-Codes
During boot, the BIOS generates a sequence of status codes (so-called "POST codes"), which can be
viewed using a special output device (POST code card). The meaning of these codes is described in the
document "Aptio™ 4.x Status Codes" by American Megatrends®, which can be downloaded from their
website The following additional OEM POST codes are generated:
Code
Description
87h
BIOS-API started
88h
PCA9535 started
89h
PWRCTRL-Firmware started
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