Control State Model Management - Mitsubishi Electric MELSEC iQ-R Series User Manual

8.5

Control State Model Management

Series
MELSEC-Q series
MELSEC iQ-R series
The following state model is used by the host to manage the state of the 3 control levels (high: remote, medium: local, low:
offline) of the equipment.
• Remote: equipment can the controlled from host
• Local: the host can access the information of the equipment, but operations are limited
• Offline: the equipment cannot be controlled from the host, and access to information is also limited
SECS/GEM communication software manages the control state model completely, such as device assignment for notifying
the current control state to the Programmable Controller CPU, assignment of the control transition switch relay and setting of
the control state default value.
CONTROL
OFF-LINE
(1)
Equipment
(2)
OFF-LINE
(12)
OFF-LINE
No. Current state
(1) (Enter CONTROL state)
(2) (Enter OFF-LINE state)
(3) EQUIPMENT OFF-LINE
(Equipment offline)
(4) ATTEMPT ON-LINE
(Online establishment
attempt)
(5) ATTEMPT ON-LINE
(Online establishment
attempt)
(6) ON-LINE
(Online)
(7) (Enter ON-LINE state)
(8) LOCAL
(Local)
8 GEM COMPLIANT FUNCTIONS
184
8.5 Control State Model Management
SECS/GEM communication software
Non-GEM version


(3)
Attempt
(4) ON-LINE
(11)
HOST
(10)
Trigger
System initialization
Enters offline state
Operator changes the
switch to online
Any one of these.
• Communication loss
• S1F1 reply timeout
• Received S1F0
Expected S1F2 is
received
Operator changes the
switch to offline
Enters Online state
Operator sets the switch
to remote
GEM version


ON-LINE
(6)
(7)
(5)
New state
System default state
OFF-LINE
(Offline)
Any one of these.
• EQUIPMENT OFF-LINE
• HOST OFF-LINE
• ATTEMPT ON-LINE
ATTEMPT ON-LINE
(Online establishment
attempt)
Depends on the setting
conditions
ON-LINE
(Online)
EQUIPMENT OFF-LINE
(Equipment offline)
ON-LINE
(Online)
The lower state is determined
based on remote/local switch
setting
REMOTE
(Remote)
GEM advanced version


LOCAL
(8) (9)
REMOTE
Operation Comments
Disabled System default state is set to
online or offline
Disabled Equipment enters any of the
lower states of the offline
state in accordance with
default setting
S1F1 is sent. On entering the ATTEMPT
ON-LINE state, S1F1 shall be
sent definitely
Disabled Depending on the setting,
equipment is set to offline or
host is set to online.
Disabled No.(7) is entered and
transition to online is notified
to the host.
Disabled "Equipment offline" event
(Event occurrence) occurs
to the event is discarded
Disabled "Control state local" event or
(Event occurrence) "control state remote" event
occurs.
The actual online lower state
to which the transition is done
is indicated
Disabled "Control state remote" event
(Event occurrence) occurs.
*1
. In offline state reply