Siemens SIMATIC S5 CP 523 Manual page 150

CP 523
Table 7-23. Status Byte (Byte 0) in Communications Mode Following "Coordinate Data Transfer"
Byte 0
Bits 4 to 7 Bits 0 to 3
0 0
X 1
X 3
X 7
X 8
0 F
1 X
2 X
3 X
4 X
8 X
No battery backup (X7
Either
• no battery has been inserted in the power supply module, or
• the battery is defective
Default time set (2X
H
The clock is set to Sunday 01.01.90 12:00:00.
Data/time error (3X )
H
At least one variable is out of range.
The new data were rejected and the clock retains the old setting.
Illegal job request (4X
A job number not permitted in Communications mode was entered in word 0 of the transfer
memory. See 7.5 for a list of permissible job numbers for Communications mode. This error code is
also used to flag invalid parameters in a parameter setting request.
EWA 4NEB 811 6044-02a
No error
Memory submodule defective
Entries in job buffer (init. requests only)
No battery backup
Job buffer full (init. requests only)
CP restart in progress
Clock defective
Default time set
Time/data error
Illegal job request
Hardware fault
)
H
)
)
H
Communications Mode
Status
7-45