MTPADP-RS-M FRS485 密码键盘说明书 v .a 3 1 (M3 x 6mm)
The USB-485B is a bi-directional USB-powered RS485 to USB converter with built-in 120 ohm termination option, which makes a half-duplex RS485 available to a PC via the USB port. The USB-485B has a DB9 male connector on the RS485 port, and a USB type A female on the USB por...
USB 2.0 RS485 1/32 load, up to 32 devices Twisted pair up to 1200 meters long Needs termination resistor 120 ohm on both ends Speed 75bps - 115200bps Driver CH340 Operating temperature -40 C ~ +85 C Dimensions: 60x12x12 mm DOCUMENTS ...
like on your workbench. In the field, it is needed, andmust be located at both ends of the line and only at the two far ends of the line. Typically this termination consists of a 120 ohm resistor between the two data lines at each end of the line. ...
120 ohm termination resistance pluggable by a 1-way microswitch Modbus master RTU (Remote Terminal Unit) communication Selectable baud rate from 1200 to 115200 baud Device addressing from 0 to 250 Coil, Input, Holding Register e Input Register data exchange Single and multiple register reading/wri...
Connect an external 5 V DC power supply to the RS-485 bus pair through two 1000 ohm bias resistors at the far end of the cable. Connect a 120 ohm termination resistor across the + and - data lines at the head end of the bus (typically at the SmartStruxure server device). Connect ...
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Question:Is there a built-in 120-ohm termination resistor? Answer: Yes, if the 120R matching resistor must be modified, move the jumper cap to the 120R position on the RS485/422 terminal. Question:What should be done in case of abnormal long-distance communication for RS485/422?
Question:Is there an internal jumper to enable the 120ohm termination resistor for the serial link? Answer: Yes, it's possible to enable termination using the jumper. The attached image shows the jumper installed. Support
1.Remove the terminal cover of the drive.2.Remove the option board fastening screw from the drive.3.Fit the FRSA board on its’ place. Use the spacer delivered with the FRSA and the screw removed at step2.4.Tighten the FRSA fastening screw.5.Install the clamping plates of the drive.6....