MiniPLC Function Blocks
 Phone Connectable - Real Time Clock - Voice Warning - Networking

 

RS

Symbol

Pin

Description

 

S

Set Output Q to 1 via Input S (Set). S port can receive two-tone signal input such as P0~P9 phone signals.

R

Set Output Q to 0 via Input R (Reset). If S and R are 1 at the same time, the Output Q is 0 (with R having a priority to s).

Q

When S is input, Q is ON and held ON, and will not be reset until Input R is set.

Switch characteristics

RS relay is a simple trigger. The output value depends on the input status and the original output status. The following list of true values is used to describe the logic relations:

S

R

Q -  Remark

0

0

Status remain to the original value

0

1

0 - RESET

1

0

1 - SET

1

1

0 - RESET (having a priority to Set)

P0-P9 represent the 0-9 buttons of telephone PLC. RS block has the fuction to receive two-tone signal. So we can use RS block to drive the external equipment and realize telephone-remote control function by driving RS block through P0-P9 while programming.

 

 
     

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