4.2
TB1
From page 1, it can be seen that TB1 has the High Speed Counter, PLC and terminals mounted to it.
For example, if the electrical schematic shows a terminal, described as TB1
2
This indicates that the terminal is located on din rail TB1 and is terminal #2.
TB1
5 This would indicate that the terminal is mounted on TB1 and is terminal #5.
TB1
5
TB1
2