Siemens SIMATIC HMI IPC677C User Manual

Alarm, error, and system messages
12.2 Introduction to the BIOS beep codes
SIMATIC HMI IPC677C
164 Operating Instructions, 04/2013, A5E02722710-04
12.2 Introduction to the BIOS beep codes
The device performs a self-test when it is switched on. If an error is detected during the
POST (Power On Self-Test), a series of beep signals are issued. The beep tones are a code
for errors and are composed of 2 x 2 sequences.
Table 12- 1 Converting the beep codes in a Hex display
Beep tones Hex code
B B 0
B BB 1
B BBB 2
B BBBB 3
BB B 4
BB BB 5
BB BBB 6
BB BBBB 7
BBB B 8
BBB BB 9
BBB BBB A
BBB BBBB B
BBBB B C
BBBB BB D
BBBB BBB E
BBBB BBBB F
Example
Tone sequence B BBB BBB B
Hex code 2 8
Meaning Determine RAM size
12.3 BIOS beep codes
The following section lists the POST codes relevant to users in the sequence in which they
occur: Contact Customer Support (http://www.siemens.com/automation/service&support
) for
information on all other POST codes.
Display
(hex)
Meaning Description Remedy
4DH DXE_MTC_INIT MTC Initial MonoTonicCounter
initialization
Service case
4EH DXE_CPU_INIT CPU Middle
Initial
CPU initialization Replace basic
module

Siemens SIMATIC HMI IPC677C Specifications

General

Brand	Siemens
Model	SIMATIC HMI IPC677C
Category	Industrial PC
Language	English