User manual

3 PLC Communication
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3.6 System signal
3.6.1 System signal 1 (GP/LP ← PLC)
System signal 1 [ UW15 ]
F E D C B A 9 8 7 6 5 4 3 2 1 0
1 Word
It is allocated in GP/LP inner word device UW15(UB150 to UB15F).
 Bit 0 (UB150): It clears all alarm histories (history and the number of occurring time) when
this bit is rising trigger of OFF→ON.
Alarm history clear function is available when the bit device of ‘Erase History’ in common
setting of alarm history turns ON and it operated separately regardless of this bit.
 Bit 1 (UB151): After this bit is OFF→ON, backlight is turned off when set time in system
environment settings is passed. When OFF this bit again or touch any part on GP/LP
screen, backlight is turned ON. The setting of backlight is operated when this bit is ON, and
it is not when this bit is OFF status.
 Bit 2 (UB152): This bit is able to select for user whether display error message for
connection with CH1 on GP/LP screen or not. An error message is not displayed on GP/LP
screen when this bit is OFF and an error message is displays when this bit is ON.
 Bit 3 (UB153): This bit is able to select for user whether display error message for
connection with CH2 on GP/LP screen or not. It operates same as bit 2(UB152).
 Bit 4 (UB154): It processes data from barcode reader as invalid data when it is ON. Input is
invalid.
 Bit 5 (UB155): When this bit is ON, barcode input reading is completed and barcode reader
is ready to receive new data. It switches signal of barcode input data writing completion
from GP, LP to PLC as OFF.
 Bit 6 (UB156)
 Bit 7 (UB157): Numeral input complete bit (bit4 of system signal2) is OFF when this bit is
ON.
 Bit 8 (UB158)
 Bit 9 (UB159)
 Bit A (UB15A)
 Bit B (UB15B)
 Bit C (UB15C)
 Bit D (UB15D)
 Bit E (UB15E)
 Bit F (UB15F)