When this switch is on, battery backup is activated for protecting the processor module
management information (in the storage memory) during power failure.
ON: Enables the backup. Select this position during normal operation.
OFF: Disables the backup.
•
Front setting switch (6-bit DIP switch)
•
PORT:
Port for maintenance (In usual operations, set to OFF position).
•
DOMN:
Indicates on STATUS LED the domain number that was set to the processor module,
if this switch is ON. (In usual operations, set to OFF position).
•
STA:
Indicates on STATUS LED the station number that was set to the processor module,
if this switch is ON. (In usual operations, set to OFF position).
•
FIX (SCP461/SCP451 only):
Negotiation (Default : OFF)
ON : Force
OFF : Auto
The following figure is an example of STATUS LED indication: If the station number is set as 5
(10000101).
P
(MSB)
(LSB)
0
1
If the station number is set as shown
in the right side figure, the LED displays
as follows (the numbered bits are lit):
1
6
8
1
2
3
4
5
6
7
8
Figure 4.2.3-4 STATUS LED Indication
When both DOMN and STA switches are off, the status lamps display operating mode and
error status.
Table 4.2.3-1 Status Lamps Display Operating Mode and Error Status
STATUS lamps
Display
Description
1, 2
Operating Mode
• Running mode: 1 and 2 on
• Waiting mode: 1 off, 2 on
• Others: 1 and 2 off
3
Security level
Turns on only for security level 2. (*1)
4
Safety control station error (*2)
• Error occurred: off
• Normal: on
5, 6, 7
Unused
Always on
8
Writing to flash memories
Writing: off, Otherwise: on
*1:
Security level 0 corresponds to offline level and security levels 1 and 2 correspond to online level.
*2:
This lamp may be linked to the SYS_DIAG output.
<4.2 Processor Module >
4-9
IM 32Q06C10-31E
4th Edition : Jan.30,2015-00
