Intermec CK30

Display Data StreamChapter —6
292 TE 2000
 5250 Terminal Emulation Programmer’s Guide
Start of Header (SOH)
Function
The SOH order notifies the terminal that the next byte in the Write data
steam contains a header order. The order specifies header information f or
the f ormat table. When the controller receives this order, it first clears the
format table, then inserts the contents of the SOH order.
Restrictions
A parameter error is posted when the output data stream ends before the
number of bytes needed are sent or when the first byte of the order is not
between 1 and 254.
Format
The SOH order takes the following form:
Function Hex Code
Order 01
Length 07
Reserved 00
Reserved 00
Rese quence 00
Error row 00
Fkeys 000000
Results
Because the length of this order varies, the first byte after the order code
contains the number of bytes included. Length may range from 0–7 bytes.
A length of 7 bytes enables or disables selected function keys designated by
the bits in bytes 5 through 7. When bits are enabled, function keys return
AID codes with input data. When bits are inhibited, or length is less than
7, function keys return AID codes but without input data.