Hitachi IJ PH Service Manual page 84

[Setting of switch]
・Setting of switch
SW1
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
[Notes for replacement:]
- Be sure to turn power off when replacing the EZJ99 board.
- Save the data on memory card by using the copy data function before replacing the EZJ99
As for the copy data
function, see "2.9
board, and be sure to recover the data after replacement.
Backup".
As the operation management, the parts usage time management, password setup and the
unit information are not backed up by the copy data function. Set them again.
- Set the SW1.
[SW1]
ON
1 2 3
Sets host communications (Set to ON)
Sets host communications (Set to OFF)
Reserve (Set to OFF)
Reserve (Set to OFF)
Sets the polarity of strobe signal transmitted from host.
Setting
ON
ＯFF
Switches the filter constant of strobe signal (capacitance).
：0.047(uF)＋2.2(uF)
ON
OFF ：0.047(uF)
Switches the power supply for input signal.
Set to ON when using the IJP internal power supply (12 V).
Set to OFF when using an external power supply
(Connect the external power supply (12- 24 V) to pin 1 of
terminal board (TB1).)
Reserve (Set to OFF)
4 5 6 7 8
Description
Photo coupler operation
(voltage level at TB1 pin 12)
3-29
ON
OFF
OFF
Standard
setting
ON
OFF
OFF
OFF
ON
OFF
ON
OFF