I have used PJL commands with some HP printers to set printer control panel display message and duplexing of PDF documents. I have some customers with similar requirements using Okidata MB760 and MB492 machines. I know the Okidata machines support PJL, but it appears to be a different set of codes from HP (as is the case with every manufacturer - no standard for PJL except the entry/exit codes). Okidata support was unable to provide a programmer's manual or a PJL reference. Does anyone have information specific to these machines or (since each manufacturer tends to use the same codes with slight variations for a long time) for any other Okidata MB machines?
No response, not even comments. I did some testing via "print to file" in Windows and it looks like I can extract enough PJL from there to do what I need to do. But I still hold some small bit of hope that someone - maybe a helpful insider at Okidata? - will post some sort of PJL reference.
You can download a program called PCL Paraphernalia which allows you to connect and execute some PJL commands.
It's not the sleekest of interfaces but the Status Readback Utility option should allow you to retrieve all the allowed variables from the printer