1 List for All PLCs Supported by NB Series 1-2 Definition and Description of Serial Port COM 1-2 Definition and Description of Serial Port COM Serial Port COM1 • NB5Q/NB7W/NB10W-TW B 1 Serial port COM1 is a 9-pin D-type socket port. This port supports RS-232C communication function, making it connectable to a controller which features RS-232C function, and it can also be used for downloading programs or debugging for the product. The pins are defined as follows: * Pin 4 and 5 are not used, thus not compliant with RS or CS function. When using the No.
6 pin of the serial communications port COM1 connector for a voltage of DC+5V, make sure the supply equipment’s current capacity is below 250 mA before using it. The DC+5V voltage output of the NB Unit is +5V±5%, and the maximum current is 250 mA. NB-series Programmable Terminals Host Connection Manual (V108) 1-7 NB5Q/NB7W/NB10W-TWB Pins COM1 Signals 1 NC 2 SD 3 RD 4 RS(RTS)* 5 CS(CTS)* 6 DC+5V 7 NC 8 NC 9 SG Precautions for Safe Use