Valid characters for hex codes are 0-9 and A-F (upper case letters only).

No spaces are allowed in the command between the ‘delimiter sequence &% and the first hexadecimal value.

A single space is permitted, but not required, to separate pairs of hexadecimal letters (to aid in easier interpretation of the hex codes).

If an error in formatting the command sequence occurs, the interface will resume printing at the point in the sequence where the error occurs.

The data included in a Command-Pass-Thru string can span print buffers. This allows transmission of long strings of hexadecimal data.

During Command-Pass-Thru, the coax interface ignores control codes (NL, LF, CR and FF) but honors the EM code.

2. CUSTOM USER STRINGS

Host download Command 55 (see Appendix A, Command 55) allows a user to permanently define six custom user strings that are frequently used (for example, a special font selection). The custom user string isactivated by simply putting the delimiter (&%), a capital letter U, and the number of the desired custom user string in the text of a page, i.e. "&%U3". The custom user strings can be any combination of text or special commands for the printer, especially ones that are often used.

3. SCS MODE TRANSPARENT DATA

SCS transparent mode (SCS TRN code 35) provides a method for transparent data transmission when operating in LU1 mode. To use this method, you must be connected to a system using SNA protocol and be operating as a Logical Unit Type 1.

A SCS TRN sequence begins with a one byte binary count immediately following the TRN code. The count indicates the number of bytes, not including the count byte, of transparent data to follow. Up to 256 bytes of transparent data can be sent in each sequence.

SCS TRN data is user-defined and is not scanned for SCS control codes. However, to emulate the characteristics of the IBM 3287, non-printable characters (i.e., control characters) are converted to hyphens. Data is translated to ASCII, with undefined characters printed as hyphens. This coax interface offers a configurable option to emulate the IBM 3287 or to pass the data without translation. Refer to Appendix A, Command 35, SCS TRN TRANSLATE.