Mitsubishi FX3U-64CCL User Manual

7 Buffer Memory
7.2 Buffer memory details
50
FX3U-64CCL User's Manual
7.2.17 [BFM#512 to 543] Link special relay (SB)
The data link status can be checked using these buffer memory addresses for bit information (link special
relays SB).
The table below shows details for the link special relays (SB).
BFM No.
(bit)
SB No. Name Description
Applicability
( : Applicable,
: Not applicable)
Online Offline
#514(b0) SB0020 Module status
Indicates the module access (module operation) status.
OFF: Normal (Module is operating normally)
ON: Abnormal (Module error has occurred)
#518 (b0) SB0060 Host mode
Indicates the mode setting status of the transmission rate/
hardware test setting switch for the host.
OFF: Online
ON: Not online
#518 (b1) SB0061 Host type
Indicates the type of the host station currently operating.
OFF: Setting errors
ON: Intelligent device station (station numbers 1 to 64)
#518
(b6, b7)
SB0066
SB0067
Number of host
occupied
stations
Indicates the setting status of host occupied stations.
#518
(b10)
SB006A
Switch setting
status
Indicates the switch setting status.
OFF: Normal
ON: Setting error exists
(the error code is stored in SW006A)
#518
(b14)
SB006E
Host station
operation
status
Indicates the host data link operation status.
OFF: Being executed
ON: Not being executed
#519 (b0) SB0070
Master station
information
Indicates the data link status.
OFF: Data link control by the master station
ON: Data link control by the standby master station
#519 (b7) SB0077
Parameter
receive status
Indicates the parameter receive status from the master station.
OFF: Receive complete
ON: Receive not complete
#519 (b8) SB0078
Host station
switch change
detection
Detects changes to the host setting switch during data linking.
OFF: No changes detected
ON: Changes detected
#521 (b0) SB0090 Host line status
Indicates the line status of the host.
OFF: Normal
ON: Abnormal (line disconnection)
Number of
occupied
stations
SB0066 SB0067
1 station OFF OFF
2 stations OFF ON
3 stations ON ON
4 stations ON OFF

Mitsubishi FX3U-64CCL Specifications

General

Brand	Mitsubishi
Model	FX3U-64CCL
Category	Controller
Language	English