Special Relay Details - FATEK FBS Series Manual

Remark: During power up or changing operation mode from STOP→RUN, all contents in non-retentive relays or
registers will be cleared to 0; the retentive relays or registers will remain the same state as before.

2.3 Special Relay Details

Relay No.
1. Stop, Prohibited Control
M1912 Emergency Stop control
M1913 Disable external outputs control
M2001 Disable/Enable status retentive control
2. CLEAR Control
M1914 Clear Non-Retentive Relays
M1915 Clear Retentive Relays
M1916 Clear Non-Retentive Registers
M1917 Clear Retentive Registers
M1918 Master Control (MC) Selection
M1919 Function output control
※ M1918/M1919 can be set to 0 or 1 at will around the whole program to meet the control requirement
Function
If ON, PLC will be stopped (but not enter STOP mode) and all
outputs OFF.
This bit will be cleared when power up or changing operation
mode from STOP→RUN.
All external outputs are turn off but the
status of Y0～Y255 inside the PLC will not be affected.
If M2001 is 0 or enabled, the Disable/Enable status of all
contacts will be reset to enable during power up or changing
operation mode from STOP→RUN.
If M2001 is disabled and force ON, the Disable/Enable status &
ON/OFF state of all contacts will remain as before during power
up or changing operation mode from STOP→RUN.
While testing, it may disable and force ON M2001 to keep the
ON/OFF state of disabled contacts, but don't forget to enable
the M2001 after testing.
Cleared When at 1
Cleared When at 1
Cleared When at 1
Cleared When at 1
If 0, the pulse activated functions within the master control loop
will only be executed once at first 0→1 of master control loop.
If 1, the pulse activated functions within the master control loop
will be executed every time while changing 0→1 of master
control loop.
If 0, the functional outputs of some function instructions will
memory the output state, even these instructions not been
executed.
If 1, the functional output of some function instructions without
the memory ability.
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Description
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