Jaykumar Vaidya

Thank you for your reply. The link that you are referring to is for MKS 900 series transducer but I am working with PDR 2000 controller. But I got it working by swapping the Rx and Tx terminals. So now, pin 7,8 and 9 (of DB15) to pin 2,3 and 5 (of DB9 connector) works

Thanks for your support. I'm new to MKS PDR 2000 Dual capacitance controller. I am familiar with serial communication and have used it often when communicating with a DB9 serial port on a computer. However, this controller has a DB15 female connector, so I'm confused on what exactly I should be doing to interface it with the laptop (as laptop doesn't have a DB15 serial connector port)? I have a USB to DB9 (male) serial converter, which I then to a small box which connects three wires (Rx, Tx and Gnd) of DB9 connector to the DB15 connector. And then this connector goes to the female DB15 connector of the controller. I'm reading the manual and connecting the pin 7,8 and 9 (of DB15) to pin 3,2 and 5 (of DB9 connector). But, this doesn't seem to be working as I can't get the controller detected in the computer. I can only detect the USB to serial converter. Do you suggest to connect the controller directly to a PC with DB15 port (without USB to DB9 and DB9 to DB15 conversion)? Once I have the controller's connection established, then I think it is straightforward as I can use HyperTerminal for serial communication. It would be great if you could have some inputs for this problem. Please let me know your inputs.

Hi Jordan and Colin, Thanks for your support. I'm new to MKS PDR 2000 Dual capacitance Manometer. I am familiar with serial communication and have used it often when communicating with a DB9 serial port on a computer. However, this controller has a DB15 female connector, so I'm confused on what exactly I should be doing to interface it with the laptop (as laptop doesn't have a DB15 serial connector port)? I have a USB to DB9 (male) serial converter, which I then to a small box which connects three wires (Rx, Tx and Gnd) of DB9 connector to the DB15 connector. And then this connector goes to the female DB15 connector of the controller. I'm reading the manual and connecting the pin 7,8 and 9 (of DB15) to pin 3,2 and 5 (of DB9 connector). But, this doesn't seem to be working as I can't get the controller detected in the computer. I can only detect the USB to serial converter. Do you suggest to connect the controller directly to a PC with DB15 port (without USB to DB9 and DB9 to DB15 conversion)? Once I have the controller's connection established, then I think it is straightforward as I can use HyperTerminal for serial communication. It would be great if you could have some inputs for this problem. Please let me know your inputs. Thanks in advance.