Mitsubishi Electronics Mitsubishi Digital Electronics Video Gaming Accessories FX3G ユーザーズマニュアル

/FX

3UC

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

4 Devices in Detail

4.4 State Relay [S]

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4.4

State Relay [S]

State relays (S) are important devices to program stepping type process control simply, and combined with the step
ladder instruction STL.
State relays can be used in the SFC (sequential function chart) programming method.

→ For programming by the step ladder instruction and SFC method, refer to Chapter 35.

4.4.1

Numbers of state relays

The table below shows state relay (S) numbers. (Numbers are assigned in decimal.)

1. FX

/FX

3UC

PLC

2. FX

PLCs

*1.

This area is not latched (battery backed). It can be changed to a latched (battery backed) area by setting the
parameters.

*2.

This area is latched (battery backed). It can be changed to a non-latched (non-battery-backed) area by setting
the parameters.

*3.

The characteristics of latch (battery backup) cannot be changed in the parameters.

*4.

These registers can be changed to the latched (battery backed) type by the parameter setting when the
optional battery is used. However, the latched range cannot be set.

Initial state type

General type

Latched (battery

backed) type

Fixed latched (battery

backed) type

Annunciator type

S0 to S9

10 points

S0 to S499

500 points

S500 to S899

400 points

S1000 to S4095

3096 points

S900 to S999

100 points

Initial state type
(EEPROM keep)

Fixed latched

(EEPROM keep) type