Mitsubishi Electric MELSEC Q Series Reference Manual page 347

APPENDICES
No. Name
SB0007 Clear forward loop
(7) transmission errors
SB0008 Clear reverse loop
(8) transmission errors
6
SB0009 Clear loop switch count
(9)
SB000A Clear transient
(10) transmission errors
SB000B Transient transmission
(11) error area setting
3 4
SB000F Clear minor errors
(15)
SB0011 Data link operation
(17) designation
Remote sub-master
SB0014
station switching
(20)
command
System switching
SB0018
monitoring time setting
(24)
valid flag
SB0020
Module status
(32)
SB0040 Network type
(64) (host)
Host station's redundant
SB0041
function support
(65)
information
SB0042 Power supply status of
(66) host
SB0043 Online switch
(67) (host)
3: Valid only when SB0047 is off. When it turns on (error), the last data are retained.
4: Minor errors are the type of errors that do not affect the CPU operation. (Refer to Section 8.3.3)
6: The SB0009 should be kept on until the SW00CE becomes "0."
App - 5
Table 2 Link special relay (SB) list (Continued)
Description
Clears the line abnormal detection (SW00CC) of the forward loop
side to 0.
Off: Clear not instructed
On: Clear instructed (valid when on)
Clears the line abnormal detection (SW00CD) of the reverse loop
side to 0.
Off: Clear not instructed
On: Clear instructed (valid when on)
Clears the loop switch count (SW00CE to SW00E7) to 0.
Off: Clear not instructed
On: Clear instructed (valid when on)
Clears the transient transmission errors (SW00EE, SW00EF) to
0.
Off: Clear not instructed
On: Clear instructed (valid when on)
Designates whether to overwrite or retain the transient
transmission errors (SW00F0 to SW00FF).
Off: Overwrite
On: Retain
Clears all of minor errors detected by remote I/O stations.
This error clear is executed on all remote I/O stations.
While SB000F is ON, no minor error is detected on all remote I/O
stations.
In a multiplexed remote I/O network (including the one that
supports redundant systems), this can be manipulated only from
the station acting as a master.
Off: Clear not instructed
On: Clear instructed (valid when on)
Designates the data link operation.
Off: No switch instruction
On: Switch instruction (valid when on)
When On is detected, data link switches from Online (normal
data link) operation to Online (debug) operation, or from Online
(debug) operation to Online (normal operation).
SB0011
D e bu g o pe ra tio n
Forcibly directs the remote sub-master station that is performing
master operation to shift to sub-master operation. (It is invalid for
the redundant system.)
Off: Without directive
On: With directive
Indicates whether the system switching monitoring time setting
(SW0018) is valid or invalid in case of a data link error.
Off: Invalid
On: Valid (valid at the time of startup)
Indicates the communication status between the network module
and the CPU module.
Off: Normal
On: Abnormal
Indicates the network type set with the parameters of the host's
network module.
Off: PLC to PLC network
On: Remote I/O network
Indicates the station supports the redundant function or not.
Off: Redundant function not supported
On: Redundant function supported
Indicates the external power supply status to the host's
QJ71LP21S-25. (When using QJ71LP21-25, 0 is ON.)
Off: Not supplied (EXT.PW LED is OFF.)
On: Supplied (EXT.PW LED is ON.)
Indicates the mode set by the switch of the host's network
module.
Off: Online (mode setting is 0 or 4); "Parameter setting mode
becomes valid"
On: Other than online (mode setting is other than 0)
D eb ug op eratio n
O nline ope ration
MELSEC-Q
Availability
Remote
Control Normal
master
station station
station
Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial
Remote I/O
station
App - 5