Olivetti PR 4 Programmer's Manual page 78

- When DTR/DSR control is selected, the printer transmits data consecutively after
confirming whether the host computer is ready to receive data. When the host is not
ready to receive data, the printer waits until the host is ready.
- When XON/XOFF control is selected, the printer transmits all data consecutively without
confirming whether the host computer is ready to receive data. The data transmission
must be consecutive, except for the XOFF code.
- The printer transmits all data collectively without confirming whether the host computer is
ready to receive data.
- To receive the identification result correctly, 67 bytes or more space is required in the
receive buffer.
- During identification result transmission, the printer ignores DLE EOT n, DLE EOT BS n,
and GS ENQ. Also the printer does not transmit ASB during reading and identification
result transmission. Therefore the user cannot confirm changes in the printer status
during these periods.
- It is possible to differentiate the reading results of MICR, ASB, and real-time status.
- The identification result is not cleared until: the next FS a 0 is executed, ESC @ is
executed, or the printer power is turned off.
- Data transmission (real-time commands and the like) should not be performed during
MICR reading, because it affects the reading precision and may lower the recognition
rating.
- When bit 4 is 0 (re-reading possible) and FS a 0, FS a 1, FS a 2, or FS b is received, the
printer executes each command. When any other code (except for real-time commands)
is received, the printer ejects the check paper, ends MICR function, and selects the
default paper type for ESC c 0 automatically.
- If the printer receives FS a 1, FS a 2, or FS b when bit 5 is 0 (normal end) and bit 4 is 1
(re-reading impossible), the printer executes each command. If the printer receives any
other code (except for real-time commands), the printer ejects the check, ends MICR
function, and selects the default paper type for ESC c 0 automatically.
- Paper feeding with the paper feed button and auto-loading cannot be performed during
the period from starting MICR character reading to ending check paper ejection. Also, do
not change the ink ribbon during this period.
Header: (5F)H
NULL: (00)H
4-42 Epson TM-U950 Commands