Older wire and cable specs may reference K1 or K2 color codes, but they are the same as E-1 and E-2. E-1 consists of six basic colors (black, white, red, green, orange, blue). The colors then repeat with a. The units have an LED for each signal line in the cable, and the LED lights green or red dependent on the signal state. Our D9 Breakout box is a little more sophisticated - it also allows you to disconnect. For RJ12, a reverse cable would go pin 1 to pin 6, pin 2 to pin 5, etc. Serial (DB) Pinouts. Serial cables, also called DB or D-Sub (D-Subminiature), are a dying breed. For the most part, they have been replaced by USB, but older machinery still uses them. There are a few main types of serial cables. This USB serial cable supplies +5V at up to 500mA (USB specification limit) along with TxD and RxD sginals -no hardware handshaking. If you need to program the Arduino board, this module can work. According to Usb To Serial Wiring Diagram, you will find just four wires used in the cable. Typically it utilizes black, green, white and red wire colours. Black cable serves as floor, exactly like in every other device. The red one is for sure wire with DC ability of 5 volts.
Using the CPU 9-pin Serial Port
The RMC100 CPU module has a DTE DB9 serial port labeled 'RS-232 Monitor.' Both RMCWin and the RMCLink ActiveX Control and .NET Assembly Component use this port. Communication over this port is always at 38400 baud with eight (8) data bits, no parity, and one (1) stop bit.
There are two versions of the serial port for the RMC product. The current style is a male DTE DB9. Early production RMCs have a female DTE DB9. However, because both connectors are DTE, the wiring is the same, so only a gender changer is needed to convert a cable between the two ports.
For details on using the serial port with RMCWin, see Using with RMCWin.
For details on using the serial port with the RMCCOM ActiveX control, see Using with the RMCCOM ActiveX Control.
See also General Wiring Information.
Note: The communication cable attached to the serial port is a potential source of electromagnetic radiation from the RMC. To minimize radiation, use a well-shielded cable that is as short as possible, and route it out the bottom of the module and against the back panel.
DB9 Pin Description
Pin | Function |
2 | Receive |
3 | Transmit |
5 | Common |
Cable Recommendations for Male DB9 Connector
Usb To Serial Cable
The following options are available for the cable between the PC and the RMC serial port:
- Generic null-modem (female on both ends) serial cable
- Allen-Bradley PLC serial cable
- Modicon Modbus cable with a 9-pin male-to-female gender changer
- Siemens SIMATIC 505 Programmable Controller serial cable
- You can use one of the following diagrams to build an RS232 cable:
Db9 Serial Cable Wire Colors
- Any other cable you have will work if you can verify that pins 2, 3, and 5 on the RMC-end of the cable are connected as shown in the above diagram. An Ohmmeter or continuity checker will work for verifying the cable connections.
![Wire Wire](/uploads/1/1/8/7/118742714/935323990.png)
Cable Recommendations for Female DB9 Connector (older)
The recommendations for the older female DB9 connector are the same as for the male DB9 connector, but the gender on the RMC-end of the cable must be reversed:
Serial Cable Wire Colors
- Generic null-modem (female on both ends) serial cable with a 9-pin female-to-male gender changer
- Allen-Bradley PLC Serial Cable with a 9-pin female-to-male gender changer
- Modicon Modbus cable
- Siemens SIMATIC 505 Programmable Controller Serial Cable with a 9-pin female-to-male gender changer
- You can build an RS232 cable using the diagram above, except the gender of the RMC-end connector should be reversed.
- Any other cable you have will work if you can verify that pins 2, 3, and 5 on the RMC-end of the cable are connected as shown in the above diagram. An Ohmmeter or continuity checker will work for verifying the cable connections.
Serial Cable Wire Color
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