Mitsubishi Electric MELSEC iQ-R Series - Page 1193

11 PROCESS CONTROL INSTRUCTIONS
11.1 Overview
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CMB (COMPUTER MANUAL BACK UP) Manual operation backup when the host computer is
abnormal
When the computer fails during loop control by
the host computer, backup is performed by the
predetermined operator station.
CAB (COMPUTER AUTOMATIC BACK UP) Automatic operation backup performed when the host
computer is abnormal
CCB (COMPUTER CASCADE BACK UP) Cascade operation backup performed when the host
computer is abnormal
LCM (LOCAL MANIPULATED) Local manual operation When the plant is started, the operation and
start-up are performed by using equipment such
as the machine side operation panel away from
the operator station, and the control mode is
monitored at the operator station.
LCA (LOCAL AUTOMATIC) Local automatic operation
LCC (LOCAL CASCADE) Local cascade operation
Control mode Description Application