LX3V-4TC
7
WECON Technology CO., LTD.
The identification code or ID number for module is read from buffer memory BFM #30 using
the FROM command.
This number for the LX3V-4TC unit is K2030.
The PLC can use this facility in its program to identify the expansion module before
commencing data transfer from and to the expansion module.
5.
System block diagram
6.
Example
In the program shown below, the LX3V-4TC occupies the position of special block number 2 (that is
the third closest block to the PLC). A Type K thermocouple is used on CH1 and a Type J on CH2. CH3
and CH4 are not used. The averaging count is four. The averaged values in degrees C of input
channels CH1 and CH2 stored respectively in data registers D0 and D3.
1)
Example 1
This initial step checks that the special function block placed at position 2 is actually an
LX3V-4TC, i.e. its unit identification number is 2030 (BFM #30). This step is optional, but it
provides a software check that the system has been configured correctly.
