Mitsubishi Electric MELSEC Q Series Reference Manual page 197

6 PROGRAMMING
No. Name
Indicates the communication status between the network module
SB0020 and the CPU module.
Module status
(32) Off: Normal
On: Abnormal
When PLC to PLC network
Indicates the station type set with the parameter of the host's
network module.
Off: Normal station
On: Control station
SB0044 Station setting
When remote I/O network
(68) (host) Indicates the station type set with the parameter of the host's
network module.
Off: Remote I/O station or multiplexed remote sub-master
On: Remote master station or multiplexed remote master
Indicates the host's baton pass status (transient transmission
enabled).
Off: Normal
SB0047 Baton pass status
On: Abnormal
(71) (host)
When an error is identified, the cause of the error can be checked
in Baton pass status (host) (SW0047) and Cause of baton pass
interruption (SW0048).
When PLC to PLC network
Control station
Indicates the host's status.
Off: Normal station
status
On: Control station (SB0044 is on)
(host)
1
When remote I/O network
SB0048
Indicate the host status
(72)
Off: Remote I/O station
Remote master
On: SB0044=On Remote master station or multiplexed remote
station status (host)
Indicates the host's data link operation status.
Off: Normal
SB0049 Host data link
On: Abnormal
(73) status
When an error is identified, the cause of the error can be checked
in Cause of data link stop (SW0049).
Indicates the baton pass status of each station. (Not applicable to
reserved stations and the station with the maximum station number
or higher)
Off: All stations normal
1
Baton pass status On: Faulty station exists
SB0070
of each station When any faulty station exists, each station status can be checked
(112)
in Baton pass status of each station (SW0070 to SW0073).
Depending on the timing of the link refresh, Baton pass status of
each station (SW0070 to SW0073) and the update may be offset
by one sequence scan.
Indicates the cyclic transmission status of each station. (Not
applicable to reserved stations and the station with the maximum
station number or higher)
Off: All stations are executing data linking
On: Stations that are not executing data linking exist
1 Cyclic transmission
SB0074 status of each When any non-executing station exists, each station status can be
(116) station checked in Cyclic transmission status of each station (SW0074 to
SW0077).
Depending on the timing of the link refresh, Cyclic transmission
status of each station (SW0074 to SW0077) and the update may
be offset by one sequence scan.
1: Valid only when SB0047 is off. When it turns on (error), the last data are retained.
6 - 2
List of Interlock Devices
Description
station
station
Sub-control station (SB0044 is off)
master station
SB0044=Off Remote I/O station or multiplexed remote sub-
master station
Use permitted/prohibited
Control Normal
station station
Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial
[Availability column] Optical: optical loop, Coaxial: coaxial bus
: Available,
MELSEC-Q
Remote
Remote I/O
master
station
station
6
: Not available
6 - 2