What is sequencer compatible? By align the signal names of each company sequencer at the terminals for easier wiring and can be wired with a 1:1 cable for each maker. Available in 2 types: 34-pole type and 40-pole type with branch terminals; 34-pole type without branch terminals; The minimum number of terminal poles is required for 34 poles, making wiring easier and reduces mistakes and wiring when branch out. The margin can be signed as a unit name. You can check the name number on the upper and lower level even after wire. (40 Pole Type with Branch Terminals) The COM terminal that serves as a power supply to the PLC side has been processed into a single unit of the board, reducing the number of wiring work. Depending on how you use the input unit of each PLC maker, the +/-will be connected. 4P input COM terminals! Use for branch units, etc. Service (COM) terminals are available. This is a separate 4P common terminal block. Use for branch and interlay. If you do not need to use it, please use it as an empty terminal. A +/-power terminal is provided with 4P to supply the PLC side. Use it for branching to the next unit. (How to move the unit after rail mounting) This unit is constructed to be fixed on the rail without a retainer, but if you want to move the unit after installing the rail, you can press the lock button to release the rail fixing mechanism and allow the unit to be moved. Please note that moving the unit without pressing the lock button may damage the rail.