HPLC Shimadzu connection problem

[Peter Onder]

Hello everybody!

We have an old Shimadzu HPLC chromatography unit in our research lab, and the machine doesn't want to communicate with the pump unit. We can adjust the pump speed, or which pump we want to use manually, and see the pump working on the computer, according flow velocity, pressure, etc., but can not control the pump (for example, valve switching). Can anybody suggest some kind of a solution?
The HPLC system consist of:
- SCL - 10A VP controller
- SPD -10A detector
- SIL - 10AD injection unit
- LC-10AD
- DGU-14A degasser
Thank you in advance for your answers.

[lmh]

can you set the flow-rate of the pump from the computer? If you can set the flow-rate, but you can't do valve-switching, then it might be that the valve (which is probably an option, and not an integral part of the pump; it may have been installed in the pump by an engineer, but is basically a separate unit) is either not configured in your software, or isn't communicating with whatever version of software you have.

[Alfred88]

Dear.
The valve must be switched manually.
Alfred