2.2 Wiring of the COM Port Terminal Block2-32.2 Wiring of the COM Port Terminal Block2.2.1 Suitable Wires and ToolsThe communication port has a screw-tightening type of terminal block. Use the following itemsfor wiring. Suitable wires (strand wire)Size Nominal cross-sectional areaAWG#28 to 16 0.08 mm 2 to 1.25 mm 2 Suitable pole terminalsIf a pole terminal is used, the following models should be used.ManufacturerCross-sectionalareaSizePart No.With insulatingsleeveWithout insulatingsleevePhoenix Contact0.25 mm 2 AWG #24 AI 0,25 - 6 BU A 0,25 - 70.34 mm 2 AWG #22 AI 0,34 - 6 TQ A 0,34 - 70.50 mm 2 AWG #20 AI 0,5 - 6 WH A 0,5 - 60.75 mm 2 AWG #18 AI 0,75 - 6 GY A 0,75 - 61.00 mm 2 AWG #18 - A 1 - 6 Pressure welding tool for pole terminalsManufacturer Model No.Part No. Product No.Phoenix Contact CRIMPFOX 6 1212034 Use a special tool to tighten the terminal block of a communication blockTo tighten terminals, use a screwdriver from Phoenix Contact (model No. SZS 0,4 x 2,5,product No. 1205037, blade size 0.4 x 2.5) or a screwdriver from Panasonic (order No.AFP0806). The tightening torque should be 0.22 to 0.25 N・m.