Mitsubishi Electric FX3G SERIES Programming Manual page 36

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2) When using an attached memory cassette (does not use the built-in program memory)
Built-in device memory (RAM)
Contact image memory
• Input relay (X)
• Auxiliary relay (M) • State relay (S)
Timer contact and time counting coil
Counter contact, counting coil, and reset coil
Built-in program memory
The PLC automatically recognizes attachment of a
memory cassette (when the power is turned ON),
and disconnects the built-on program memory.
(Priority is given to the memory cassette.)
*1. Supported in Ver. 3.00 or later.
34
CPU
[Bit device memory]
• Output relay (Y)
(RAM)
Not used
2 Overview (Sequence Program)
2.6 Program Memory and Devices
System ROM
[Data memory]
• Data register (D)
• Timer present value register (T)
• Counter present value register (C)
• Index register (V, Z)
• Extension register (R)
Memory cassette
(Flash memory)
Parameter
Sequence program
Comment
File register (D)
Special setting
Symbolic information
Extension file register (ER)
*1