Mitsubishi FX1N Series Programming Manual

FX Series Programmable Controllers Devices in Detail 4
4-7
4.4.2 Battery Backed/ Latched State Relays
There are a number of battery backed or latched relays whose status is retained in battery
backed or EEPROM memory. If a power failure should occur all output and general purpose
relays are switched off. When operation is resumed the previous status of these relays is
restored.
Available devices:
• For more information about device availability for individual PLC’s, see chapter 8.
External loads:
• State relays are provided with countless number of NO contact points and NC contact
points, and are freely available for use through out a PLC program. These contacts
cannot be used to directly drive external loads. All external loads should be driven
through the use of direct (ex. Y) outputs.
PLC FX1S FX1N FX2N FX2NC
General state
relays
N/A N/A
500
(S0 - 499)
Battery backed/
latched relays
128
(S0 - 127)
1000
(S0 - 999)
500
(S500 - 999)
Total available 128 1000 1000

Mitsubishi FX1N Series Specifications

General

Programming Language	Ladder Logic
Output Type	Relay, Transistor
Operating Temperature	0 to 55°C
Power Supply	100-240V AC or 24V DC
Program Capacity	8K steps
Communication Ports	RS-422
Data Memory	8000 words
High-speed Counters	Up to 6 channels
Expansion Modules	Available
Pulse Output	2 points