Error Invalid Station Function - Mitsubishi A1SJ61BT11 User Manual

4 FUNCTIONS

4.7 Error Invalid Station Function

POINT
If the remote or local station set as the invalid station and also "specified as a reserved
station", the reserved station function has priority.
Address b15
14 16
H
15 32
H
16 48
H
17 64
H
Master
station
Address b15
14 0
H
15 0
H
16 0
H
17 0
H
This is a function to treat the remote and local stations that cannot perform data links
due to power off, etc. not as "data-link faulty stations" on the master station and the
local station.
Be careful, however, for errors will not be detected at all if set so.
(1) Setting method
The invalid station specification is performed with parameters (buffer memory
address 14 to 17
H
Turn on the bit corresponding to the station number to be set as invalid.
However, for the remote/local station which occupies more than 2 stations, turn
on the only bit corresponding to the station number set with the module's station
number setting switch.
The buffer memory configuration is shown below. (1 to 64 indicates station
numbers.)
b14 b13 b12 b11
15 14 13 12
31 30 29 28
47 46 45 44
63 62 61 60
(2) Setting example
(a) System configuration example
When specifying the remote station No.3 and local station No.7 as invalid
stations in a system where three remote and two local stations are
connected:
Station No. 1 Station No. 3
Remote station Remote station
(occupies 2 stations) (occupies 1 station)
(b) Buffer memory setting example
Turn on the 2nd bit, corresponding to station No. 3, and 6th bit,
corresponding to station No. 7. (Set "68" for address 14
b14 b13 b12 b11
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
).
H
b10 b9 b8 b7
11 10 9 8
27 26 25 24
43 42 41 40
59 58 57 56
Modules to be set as error invalid
Station No. 4
Local station
(occupies 1
station)
b10 b9 b8 b7
0 0 1 0
0 0 0 0
0 0 0 0
0 0 0 0
4 - 23
MELSEC-A
b6 b5 b4 b3
7 6 5 4
23 22 21 20
39 38 37 36
55 54 53 52
Station No. 5
Remote station
(occupies 2 stations)
.)
H
b6 b5 b4 b3
0 0 0 1
0 0 0 0
0 0 0 0
0 0 0 0
b2 b1 b0
3 2 1
19 18 17
35 34 33
51 50 49
Station No. 7
Local station
(occupies 4
stations)
b2 b1 b0
0 0 0
0 0 0
0 0 0
0 0 0