Specifying SCS controls for VTAM-controlled printers

When you print on VTAM-controlled SCS printers, you can specify SCS controls in the Document header and Document trailer fields. For example, if your printer supports the Page Presentation Media (PPM) control, you can specify the PPM control in the Document header field to adjust the paper drawer, duplex option, and other media-related characteristics. In the Document trailer field, you can reset the printer to its original state. Consult the documentation for your printer to determine which SCS controls your printer supports.

IP PrintWay™ automatically generates SCS controls in the SCS data stream that it sends to the printer. Therefore, if you specify these same controls in the Document header field, the printer ignores them. The SCS controls that IP PrintWay generates in the SCS data stream are:

• SLD (Set Line Density)
• SPD (Set Print Density)
• SHF (Set Horizontal Format)
• SVF (Set Vertical Format)

Although you cannot specify the SHF and SVF controls in the Document header field, you can specify the SHF maximum presentation position (MPP) and the SVF maximum page length (MPL) in the printer definition. For more information, see SCS page-formatting attributes.