User`s manual

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MELSEC-Q
3 DATA USED FOR PROCESS CONTROL INSTRUCTIONS AND HOW TO
SPECIFY DATA
(c) MODE
The process control instructions have the following operation modes that satisfy the
following operations in a system connected to an operator station, PLC, host computer,
machine side operation panel and like.
b15
b12 b8 b4 b0
b1b2b3
b5
b6
b7
b9b10b11
b13
b14
C
M
V
C
A
B
C
A
S
M
A
N
L
C
A
C
S
V
C
C
B
C
M
B
A
U
T
L
C
C
L
C
M
For MODE make one of them a 1 bit only flag 1.
Operation mode Description Application
MAN
(MANUAL)
• Manual operation from OPS
• SV and MV can be set.
AUT
(AUTOMATIC)
• Automatic operation
• SV can be set.
• MV cannot be set.
CAS
(CASCADE)
• Cascade operation
• SV and MV cannot be set.
Monitoring and control from operator station
are performed.
CMV
(COMPUTER MV)
• Automatic MV setting from host computer
CSV
(COMPUTER SV)
• Automatic SV setting from host computer
Loop operation from host computer can be
performed and operation mode is controlled
and monitored at operator station.
CMB
(COMPUTER MANUAL BACK UP)
• Manual operation backup when host
computer is abnormal
CAB
(COMPUTER AUTOMATIC BACK UP)
• Automatic operation backup when host
computer is abnormal
CCB
(COMPUTER CASCADE BACK UP)
• Cascade operation backup when host
computer is abnormal
During loop control by host computer, backup
is provided by predetermined operator station
when computer fails.
LCM
(LOCAL MANIPULATED)
• Local manual operation
LCA
(LOCAL AUTOMATIC)
• Local automatic operation
LCC
(LOCAL CASCADE)
• Local cascade operation
At startup of plant, operation and startup are
performed by loop display or like from other
than operator station and operation mode is
monitored by operator station.