4. SPECIFICATIONS
4-17
(2) List of external control I/O signals
Signal name
Connection diagram
Explanation
Contact specification
CPU side
Terminal # User side
HJ-7815-21
B contact
HJ-7815-22
A contact
PSDOWN_1,
PSDOWN_2
Indicates either the OS is
shut down (standby or
primary power off) or the
power supply to the
Equipment is
disconnected.
Closed at
power-off
(contact B).
Closed at
power down.
Opened at
power-off
(contact A).
Opened at
power down.
CPUSTOP_1,
CPUSTOP_2
Indicates whether the
CPU cannot operate
normally because of
extremely heavy load or
the CPU is hung.
Closed at
power-off
(contact B).
Closed at
CPU stop.
Opened at
power-off
(contact A).
Opened at
CPU stop.
MCALL_1,
MCALL_2
Maintenance call signal.
Indicates that the
temperature, fan rotation
or one side of mirrored
disks (D model only) is
abnormal.
Opened at
power-off
(contact A).
Closed at
maintenance
call.
Opened at
power-off
(contact A).
Closed at
maintenance
call.
GENDO0_1,
GENDO0_2
General-purpose
output
signal. The user can
define the meaning of the
signal on each contact of
GENDO0 through
GENDO2.
Opened at
power-off
(contact A).
User-defined.
Opened at
power-off
(contact A).
User-defined.
GENDO1_1,
GENDO1_2
GENDO2_1,
GENDO2_2
WDTTO_1,
WDTTO_2
Indicates
timeout
detection by the
watchdog timer. A
timeout is detected even
while the OS is shut
down (auxiliary power or
primary power off) or the
power supply to the
Equipment is
disconnected.
Closed at
power-off
(contact B).
Closed at
watchdog
timer timeout
or CPU power
down.
Opened at
power-off
(contact A).
Opened at
watchdog
timer timeout
or CPU
power down.
(Continued on next page)
Fuse
40 VDC 0.1A
Contact
~
Load
5
18
Surge Sup.
Fuse
40 VDC 0.1A
Contact
~
Load
23
9
Surge Sup.
Fuse
40 VDC 0.1A
Contact
~
Load
1
14
Surge Sup.
Fuse
40 VDC 0.1A
Contact
~
Load
4
17
Surge Sup.
Fuse
40 VDC 0.1A
Contact
~
Load
2
15
Surge Sup.
Fuse
40 VDC 0.1A
Contact
~
Load
3
16
Surge Sup.
Fuse
40 VDC 0.1A
Contact
~
Load
24
10
Surge Sup.
Summary of Contents for HF-W2000 30
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