Mitsubishi Electric Melsec A Series - Page 137

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REPLACEMENT OF MELSECNET (II) AND /B (REMOTE I/O NETWORK)
3
(2) Master station special register
Special register enabled when host station is the master station
: Compatible, : Partial change required, × : Incompatible
(to next page)
Special register in the case of MELSECNET (II)
master station
MELSECNET/H special register
Number Name Description Number Name Description
Compat-
ibility
Precautions for
replacement
D9200
LRDP processing
results
0: Normal completion
2: LRDP instruction
setting fault
3: Error at relevant
station
4: Relevant station
LRDP execution
disabled
None - -
Delete when used in a
sequence program.
(Refer to Section 2.6.2
Transient instructions.)
D9201
LWTP processing
results
0: Normal completion
2: LWTP instruction
setting fault
3: Error at relevant
station
4: Relevant station
LRDP execution
disabled
None - -
Delete when used in a
sequence program.
(Refer to Section 2.6.2
Transient instructions.)
D9202
Local station link
type
Stores whether or not
the slave station is a
MELSECNET
compatible station or a
MELSECNET II
compatible station.
None - -
Delete when used in a
sequence program due
to MELSECNET/H
system.
D9203
D9241
D9242
D9204 Link status
0: Forward loop,
during data link
1: Reverse loop,
during data link
2: Loopback
implemented in
forward/reverse
directions
3: Loopback
implemented in
only forward
direction
4: Loopback
implemented only
in reverse direction
5: Data link disabled
SW0049
(SW0090
to
SW009A)
Cause of data link
transmission stop
0: Normal
1: Stop instruction
issued
2: No common
parameters
3: Common
parameter error
4: Host station
CPU error
6: Communication
canceled
Check whether or not
the data link is normally
SW0049.
(Loop status is judged
comprehensively by
SW0090 to SW009A.)
D9205
Station
implementing
loopback
Station that
implemented forward
loopback
SW0099
Loopback station
(forward loop side)
Stores the number
of stations executing
the loopback on the
forward loop side.
D9206
Station
implementing
loopback
Station that
implemented reverse
loopback
SW009A
Loopback station
(reverse loop side)
Stores the number
of stations executing
the loopback on the
reverse loop side.
D9207
Link scan time
Max. value SW006B
Link scan time
Max. value
D9208 Min. value SW006C Min. value
D9209 Current value SW006D Current value
D9210 Retry
Stored as cumulative
value
SW00C8
Number of retries
on the forward loop
side
Accumulates and
stores the number of
retries on the
forward loop side.
The retries on the
forward loop side are
stored as a cumulative
value.
SW00C9
Number of retries
on the reverse loop
side
Accumulates and
stores the number of
retries on the
reverse loop side.
The retries on the
reverse loop side are
stored as a cumulative
value.