YOKOGAWA SSC60D - LED Display

4.2.2 LED Display
RCV 1 2
SND 1 2
1 2 3 4 5 6 7 8
HRDY
RDY
CTRL COPY
SYNC
SCTY
HRDY lamp
RDY lamp
CTRL lamp
COPY lamp
STATUS lamp
RCV lamp
SND lamp
Figure 4.2.2-1 LED Display
•
HRDY:
The processor module performs self diagnosis. If the processor module hardware is func-
tioning normally, the green lamp turns on. If abnormality is found, the lamp turns off.
• RDY:
The green lamp turns on if both the hardware and software are functioning normally. If
either of them is abnormal, the lamp turns off.
• CTRL:
The green lamp turns on if the processor module is performing control. If the processor
module is standby, the lamp turns off.
• COPY:
In the dual-redundant type safety control unit, the green lamp turns on when program
copy is executed and turns off when program copy is completed.
When a processor module has been replaced or when the unit is stopped and then star-
ted again, the standby-side processor module automatically copies the program of the
control-side processor module. When copy is completed, the lamp turns off. It is always
off in the basic safety control unit (non-redundant configuration).
• RCV:
Indicates the control bus communication status. 1 stands for bus1 while 2 stands for
bus2.
• V net: When receiving communication frames, the green lamp turns on, otherwise the
lamp turns off.
• Vnet/IP: When receiving communication frames, the green lamp blinks, otherwise the
lamp turns off.
• SND:
Indicates the control bus communication status. 1 stands for bus1 while 2 stands for
bus2.
• V net: When sending communication frames, the green lamp turns on, otherwise the
lamp turns off.
• Vnet/IP: When sending communication frames, the green lamp blinks, otherwise the
lamp turns off.
• SYNC:
Indicates the time synchronization status.
• V net: If the module is synchronizing with V net clock or IRIG-B clock, the green lamp
turns on, otherwise the lamp turns off.
• Vnet/IP: If the module is synchronizing with Vnet/IP clock, the green lamp turns on,
otherwise the lamp turns off.
• SCTY:
<4.2 Processor Module > 4-6
IM 32Q06C10-31E 4th Edition : Jan.30,2015-00