# 6.1.3 Word switch

**Introduction**

\[Word switch] could change value of specified PLC or HMI word address, when the switch is triggered the value will be written to specified address.

**Description**

![](/files/-Luq6Dv4TTSH_lWYnzVc)

**1) Edit**

**Read address:** Read value from specified address;

**Write address:** Write value to specified address;

Read and write address could be the same;

**2) Data format**

**Format**: It is for setting operating data format; it could support six modes;

**3) Mode**

\[Mode] is for setting operating mode for value, it could support 3 modes;

**Set value:** Set a constant value for the word address.

**Increase:** Increase the \[operand] value for each time the switch is triggered.

**Decrease:** Decrease the \[operand] value for each time the switch is triggered.

**High/Low limit:** The value will not increase/decrease when the value reaches limits.


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