Simplex DB9 to RJ11

H NS RS 232 Interface General back panel of the CPP 3794 provides a combination of 9 pin DB connectors and connectors for connecting RS 232 serial cables The 9 pin DB connector is based an IEEE standard that has existed for a number of years Typical with standards it is to apply to a large number of interfacing applications The vast majority of RS applications use only 3 wires TX RX and ground Two other signal pins RTS and are sometimes used when interfacing to modems and radios or RS 485 signals IEEE standard also defines a 25 pin DB standard and specifies either a male or gender connector depending on the utility of the unit which can be ambiguous pins in the connector change functionality depending on the gender As such a is created trying to get the correct connector gender connector matched with pins utility Quiet often to implement a neat cabling arrangement a cable must fabricated to eliminate null modems and connector size changes much more straightforward approach is to use a telephone jack connector Many of engineering effort was expended to create the cable jack connections being in the telephone industry The connectors are small very inexpensive reliable readily available and easy to fabricate The connectors cable tools required to fabricate cables are universally available installs a 6 pin RJ11 connector into the CPP rear panel for each RS 232 port majority of applications only use four of the 6 pins which are pins 2,3,4,5 A null can be readily implemented by either twisting or not twisting the cable which is detectable because the cable is color coded Standard purchased telephone are twisted Presented below are the pin assignments set up by H2NS for the connector 3 4 5 1 RTS Output 2 TX Output of CPP 3 Gnd TX in RS 422 485 4 Gnd RX in RS 422 485 5 RX Input to CPP 6 CD Input Blu Yel Grn Red Blk Wht 9 Pin Female 9 Pin Male 1 2 3 4 5 6 can also provide RS 232 connectors that are terminated in an RJ11 connector of the RS 232 connectors can be connected to an instrument and then connected an RJ11 cable to the CPP The wire colors for the 9 pin DB male and female are given below DB9 Pin Connectors on CPP Rear Panel communication ports on the CPP also have female DB9 pin connectors The assignments are given below PC 9 Pin DB pin assignments for the 9 pin DB connectors are presented below The DB9 female RJ 11 will plug directly into a PC The pin assignments assume that a standard telephone cable is used Chassis ground RS 232 serial out RS 232 serial in RS 422 485 Ground RS 422 485 RS 422 485 Request To Send RS 232 422 485 RS 422 485 1 2 3 4 5 6 7 8 9 Pin 1 RTS 2 Rx 3 Tx 4 5 Gnd 6 7 8 CD 9 to 9Pin DBF to PC RJ 11 Pin Blu 6 5 Yel Blk 2 Signal Pin CPP CD Tx Rx Grn 3 Gnd Wht 1 RTS API output of some of the API instruments can be switch selected to be either a DCE or configuration in regards to pins 2 3 Rx Tx The rear panel connector is a 9 pin DB connector Select the DCE configuration The proper wiring for the mating 9 male DB to RJ 11 is given below The pin assignments assume that a standard telephone cable is used Pin Tx Rx Gnd to 9 Pin DBM to API RJ 11 Pin Yel Blk Grn Signal Pin CPP 2 Rx 5 Tx 3 Gnd Environics calibrators have a male 25 pin DB connector for the RS 232 interface The proper wiring for the mating 25 pin female DB to RJ 11 is given below pin assignments assume that a standard twisted telephone cable is used Yel Blk Grn RJ 11 to 25 Pin DBF to Environics Pin Color RJ 11 Pin Tx Rx Signal Pin CPP 5 Rx 2 Tx 3 Gnd Forney instruments have a female 25 pin DB connector The proper wiring for the 25 pin male DB to RJ 11 is given below Only the three wires are needed The assignments assume that a standard twisted telephone cable is used to 25 Pin DBM to Forney Pin Color RJ 11 Pin Rx Tx Gnd Blk Yel Grn CPP 2 Tx 5 Rx 3 Gnd Rx Tx Gnd Pin DBM to RJ 11 to CPP 3 2 5 or Yel Tx Rx Gnd RJ 11 Signal Pin CPP 3 Blk 2 2 Yel 5 5 Grn 3 Met One Met One sonic anemometer offers a six wire cable carrying the RS 232 signals to the sensor and a shield The white and green wires are for power and are and ground respectively Power can be obtained from the rear panel of the CPP three RS 232 wires should be installed in a male DB 9 pin connector as presented The connector can be plugged directly into the CPP or plugged into a 9 pin DB with a standard telephone pigtail connection to the CPP Monitor Labs Monitor Labs instruments support multidropping on the RS 232 communications This allows all Monitor Labs instruments to be connected to one comm port on the if desired Only three wires are required to interface with the Monitor Labs The Monitor Labs rear panels have 9 pin DB female connectors The panel wiring is given below Rainwise 9 pin DB to RJ 11 connector is plugged into the rear of the Rainwise unit The rear of the Rainwise unit has a male 9 pin DB connector A standard telephone cable the serial port of the Rainwise to the serial port of the CPP The CPP requires three wires to communicate with the Rainwise The wiring for the 9 pin DB is defined below Pin DB Color RJ 11 Signal Pin 2 Tx 3 Rx 5 Gnd 3 Signal Pin CPP to 9 Pin DBM to ML 4 Yel Blk Grn WS 1000CC Rear DB 9 pin pin To RJ 11 Signal 3 Gnd 2 RxD 5 TxD Grn Blk Yel pins 4 5 pins 6 9 WS 1000CC end Rupprecht Patashnick rear panel connector is a 9 pin female DB connector The proper wiring for the 9 pin male DB to RJ 11 is given below The pin assignments assume that a twisted telephone cable is used DB To R P RJ 11 RJ 11 Signal Blk Yel Grn 2 Rx 5 Tx 3 Gnd 5 2 3 Pin 2 Tx 3 Rx 5 Gnd Teco pin assignments for the 9 pin DB connectors are presented below The DB9 female RJ 11 will plug directly into the CPP and a Teco Instrument The pin assignments that a standard twisted telephone cable is used DB To TECO Pin 2 Rx 3 Tx 5 Gnd RJ 11 RJ 11 Signal CPP Yel 2 Blk 5 3 Grn M C PMA100 has a 9 pin female DB RS 232 rear panel connector labeled X2 A DB male connector plugs into the PMA100 Tx Rx Gnd Pin 2 5 3 Tx Gnd Rx DBM To RJ 11 DB9 2 5 3 Yel Red Blk 2 4 5