Siemens PC 670 사용자 설명서
Fault Diagnosis
Release 04/02
6-8
Panel PC 670 Computing Unit, Equipment Manual
6.8
Computing Unit Self-Test Prior to Booting
After switching on the SIMATIC PC a self-test is initiated (POST = Power On Self
Test). If errors are detected during the POST, the corresponding sequence of
POST beeps (beep code) are issued. Each beep code consists of 2 x 2
sequences.
Test). If errors are detected during the POST, the corresponding sequence of
POST beeps (beep code) are issued. Each beep code consists of 2 x 2
sequences.
In addition, the individual test steps which the self-test executes, are issued on the
I/O port 80h.
I/O port 80h.
Conversion table for the beep codes to hexadecimal representation:
Beeps
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
B
BBB
BBB
B
Beeps
2
8
Hex Code
Test system memory
Meaning
Special codes
In addition to the beep codes listed below, there are also special codes:
3x short
INSERT button has been pressed during the system start:
The Onboard Device Installation is skipped. The Onboard
Graphic is used as the standard output.
The Onboard Device Installation is skipped. The Onboard
Graphic is used as the standard output.
1x long 8x short
Fault reading the MPI system information:
Contact your technical service department.
Contact your technical service department.
4x short
MPI EPROM was programmed for the first time.
1x long 5x short
Ethernet error: Contact your technical service department.