I/O Modes - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

I/O modes

Inputs and outputs of the tag FB is connected or disconnected with the I/O module in accordance with the I/O mode setting.
Also, the input processing and loop control operation of the tag FB can be stopped.
The tag FB has four I/O modes as follows.
Symbol I/O mode
NOR NORMAL
SIM SIMULATION
OVR OVERRIDE
TSTP TAG STOP
Available I/O modes depend on the tag type. For the correspondence between the tag types and I/O modes, refer to the
following.
Page 589 Correspondence table of tag types and I/O modes
Switching the I/O mode
The I/O mode can be switched when the control mode is MANUAL. Use the faceplate for switching. ( PX Developer
Version 1 Operating Manual (Monitor Tool))
Description
Connects the signals from the I/O module (normal mode).
Disconnects the signals from the I/O module and performs simulations. ( Page 606 Simulation
function (SIMULATION mode))
Disconnects signals from the input module and enables the input of the process variable (PV) on
the faceplate. This mode is used in case of the input sensor failure. ( Page 611 Override
function (OVERRIDE mode))
Performs no processing related to the tag. The input processing and loop control operation are
stopped.
This mode is set for the tag which has been defined for future use or has stopped. All alarms
related to the tag are reset, and no unnecessary alarm will occur. ( Page 611 Tag stop function
(TAG STOP mode))
1 PROCESS CONTROL FUNCTION BLOCK
1
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1.3 Tag FB