Mitsubishi Electronics FX3G User Manual

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3S

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3G

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3GC

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3UC

 Series

Programming Manual - Basic & Applied Instruction Edition

4 Devices in Detail

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.

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

*1.

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.

*2.

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

*3.

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

*4.

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

S0 to S9 

10 points

S10 to S127

118 points

S128 to S255

128 points

S0 to S9 

10 points

S10 to S899

890 points

S900 to S999

100 points

S1000 to S4095

3096 points

*1

S0 to S9

10 points

*2

S0 to S499

500 points

*2

S500 to S899

400 points

*3

S1000 to S4095

3096 points

*4

S900 to S999

100 points

*3