This page describes the edits to the Reference Manual as well as providing supplementary information.

• Supplementary information of LT4000 Series (Require an Internet connection)

Before using LT4000 Series, please refer to this document.

• Printing labels for the EZ Illuminated Switch

Describes the print settings for print labels.

• System Variables for Security Data Write Operations

Correct usage for system variables #H_SecurityWriteControl and #H_SecurityWriteStatus is provided. Please refer to the associated section.

• #L_ExIOCntInState

Correct usage for special I/O system variable #L_ExIOCntInState is provided. Please refer to associated section.

Printing labels for the EZ Illuminated Switch

To print labels for the EZ Illuminated Switch, use the following printer settings.

Paper Size: A6

Orientation: Landscape

Margins: None

System Variables for Security Data Write Operations

The description stated the incorrect number of user IDs you can set up for security data write operations. You can set up 100 user IDs. For more information, see the following.

The corresponding topic is A.2.2.2 Integer Type - #H System Variables.

#L_ExIOCntInState

#L_ExIOCntInState^*1 is a system variable that stores information for special I/O drivers (High Speed Counter). You can read from and write to the variable.

*1 Available only for LT4000 series.

Counter Input State (#L_ExIOCntInState)

This variable shows the status of the current value in the high speed counter.

Bit number varies depending on the CH number specified in the I/O Driver settings.

*Apply the CH number to "n" to find the associated bit number.

a,e: Reached Upper/Lower Limit flag and Clear bit

The following figure is the timing chart for the Reached Upper/Lower Limit flag (e) and the Clear bit (a).
Counter Mode will be explained in [Ring], and similarly Counter Operation in [up-counter].

1) Current value reaches the upper limit and "e" the Reached Upper/Lower Limit flag, turns ON.
2) When Clear bit "a" turns ON, the Reached Upper/Lower Limit flag turns OFF.
3) Turn OFF Clear bit "a".
4) While "e" (Reached Upper/Lower Limit flag) is ON, it cannot detect if the current value reaches the upper limit.
 

f,g,h: Compare Preset Value and Current Counter Value

Comparison to show whether the Current Counter Value is less than or greater than the Preset Value, using bits "f", "g" and "h".
There are two Preset Values: ON Preset Value and OFF Preset Value. The value in "f" depends on the result of the comparison between the current value and the smaller of the Preset Values. The value in "g" depends on the comparison result between the current value and the greater of the Preset Values.

Bit "f"
1) When counting up, bit "f" turns ON if the Current Counter Value reaches A – Preset Value (smaller). "f" turns OFF if the current value reaches the upper limit and is reset.
2) If the Current Counter Value is reset and is less than A – Preset Value (smaller) – "f" turns OFF.
3) When counting down, "f" turns OFF if the Current Counter Value reaches A – Preset Value (smaller).

Bit "g"
4) When counting up, bit "g" turns ON if the Current Counter Value reaches B – Preset Value (greater). "g" turns OFF if the current value reaches the upper limit and is reset.
5) When counting down, "g" turns OFF if the Current Counter Value reaches B – Preset Value (greater).

Bit "h"
6) When counting up, bit "h" turns ON if the Current Counter Value reaches A – Preset Value (smaller). "h" turns OFF if the Current Counter Value reaches B – Preset Value (greater).
7) If the Current Counter Value goes out of range defined by A and B while "h" is ON, "h" turns OFF.
8) When counting down, bit "h" turns ON if the Current Counter Value reaches B – Preset Value (greater). "h" turns OFF if the Current Counter Value reaches A – Preset Value (smaller).