Reset Switch; Mode Switch; Internal Diagnosis - Mitsubishi MELSEC-A Series User Manual

5. HANDLING AND OPERATION
MELSEGA
5.1.2 RESET switch
The RESET switch
of
the AJ71 PB92
i s
described.
When this switch is pressed, all operations within the PROFIBUS interface
such as communication processing are interrupted and initialization is carried
out. The RESET switch is used when initialization is required to start up the
network. The switch has such
a
structure as difficult to be pressed errone-
ously during communication. The RESET switch is operated by pressing with
the end of
a
small screwdriver.
NOTE
I
The RESET switch on the PC CPU cannot be used to initialize the
PROFIBUS interface.
5.1.3
MODE
switch
Used principally to switch between the ONLINE and SELFTEST status.
Test item
SW
No.
MEMORY TEST
Mode
PIT
TEST
C286CPU, PIC,
SELF TEST
Daughtor'r
Slav. PCB
2
Switch Marking
DRAM
DP-RAM
Normal
O
operation
-
ONLINE
- - -
diagnosis
1
Internal
Internal
0
TEST1
-
0 0
I 1
diagnosis 2
I
0
I
-
1
-
I
0
I
TEST2
I
Used to set the addrerss of the host station. There are two rotary switches
(1
a t
Valw (hox.)
Remarks
Application
00
to 70
Station Address
I
7E to FF
not used
If sat, an error is indicated by the
LRDs. *l
'1
LEDs
1
through 4 light.