Mitsubishi Electric MELSEC-Q Structured Programming Manual page 273

FXCPU Structured Programming Manual
[Device & Common]
Classification
Keyword
Program title
Others
Storage of the
symbolic
information /
Block password
2. FX /FX /FX
1S 1N 1NC
Classification
Memory
Capacity
Memory Comments
Capacity Capacity
File Register
Capacity
Latch range
Device
setting
Battery Less
Mode
MODEM
PLC System(1) Initialized
RUN Terminal
Input
Serial port
PLC System(2) operation
setting
Keyword
Others
Program title
Item
This parameter sets protection to prevent erroneous reading and incorrect writing of a sequence
program. The keyword protection (8digits), keyword protection (16digits) and customer keyword can
be specified in alphanumeric characters A to F and 0 to 9.
In addition, a permanent PLC lock can be specified.
This parameter enables to set a character string to be used as the program title.
For details refer to Section 7.1.
/FX /FX PLCs
2N 2NC
Item
This parameter specifies the maximum value for the number of steps to which a sequence program
can be input.
1) The upper limit is determined by the capacity of the built-in memory or attached optional
memory.
2) The memory capacity includes the program memory, file registers and comment area.
This parameter incorporates comments into the program memory.
1) Because comments remain in the PLC, the contents can be easily understood at the time of
maintenance.
2) Up to 50 comments can be input when one block is specified, and one block requires 500 steps
in the memory capacity.
This parameter incorporates data registers into the program memory.
1) A sequence program and control data such as machining set values can be handled together,
which is convenient.
2) Up to 500 file registers can be created when one block is specified, and one block requires 500
steps in the memory capacity.
This parameter enables to change the latched (backed-up) device range and non-latched (non-
backed-up) device range inside FX
(These device ranges cannot be changed in FX
This parameter sets the PLC operation mode without a battery in FX
When the batteryless mode is selected, the PLC automatically stops detection of battery voltage low
error, and initializes the contents of latched (backed-up) devices.
This parameter automatically sends a specified AT command as the initialization command to a
modem connected to the serial port.
This parameter specifies the input number of the RUN input described above in the range from X000
to X017.
In main units whose number of input points is 16 or less, the input number can be set for available
number of input points.
This parameter corresponds to the following settings by specifying each contents on the personal
computer screen:
Setting of the communication format (D8120)
Setting of the station number (D8121)
Setting of the timeout check (D8129)
This parameter sets protection to prevent erroneous reading and incorrect writing of a sequence
program. The 8-digit keyword can be specified in alphanumeric characters A to F and 0 to 9.
This parameter enables to set a character string to be used as the program title.
6 Types and Setting of Parameters
Description
Description
/FX PLCs.
2N 2NC
/FX /FX PLCs.)
1S 1N 1NC
2N
6.1 Parameter List
/FX PLCs.
2NC
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