Epson TM-L90 Developer's Manual page 59
Hide thumbs
Also See for TM-L90:
- Technical reference manual (212 pages) ,
- Service manual (148 pages) ,
- User manual (112 pages)
Table of Contents
Advertisement
Confidential
Busy state
Selecting conditions that invoke a BUSY State
The conditions that invoke a BUSY conditions are selected with memory switch Msw 1-3 as
follows.
P rinter status
Offline
During the period from when the power is turned on (including
resetting using the interface) to when the printer is ready to
receive data.
During the self test.
When the cover is open.
During paper feeding using the paper feed button.
When the printer stops printing due to a paper-end.
(only when the paper roll is not present)
When an error has occurred.
When the receive buffer becomes full.
Notes on setting memory switch Msw1-3 to ON
1. The printer mechanism stops but does not become busy when: an error has occurred, the
cover is open, printing stops due to a paper-end, or paper is fed using the paper feed button.
2. When setting memory switch 1-3 to ON to enable handshaking with the printer, be sure to
check the printer status using the GS a command and the ASB function. In this setting, the
default value of n for GS a command n is 2. The printer automatically transmits the printer
status, depending on online/offline changes.
3. When using DLE EOT and DLE ENQ and DLE DC4, be sure that the receive buffer does not
become full.
•
When using a host that cannot transmit data when the printer is busy:
If an error has occurred, DLE EOT and DLE ENQ and DLE DC4 cannot be used when the
printer is busy due to a receive buffer-full state.
•
When using a host that can transmit data when the printer is busy:
When the receive buffer becomes full while transmitting bit-image data if DLE EOT or
DLE ENQ and DLE DC4 is used while sending the bit-image data is processed as bit-
image data. Data transmitted when the receive buffer is full may be lost.
Example: Check the printer status using GS I or GS r after transmitting each line of data
and use the 4K byte receive buffer. Transmit one line of data so that the receive buffer
does not become full.
3-10 Description of Functions
Memory switch Msw 1-3 state
ON
OFF
BUSY
BUSY
BUSY
BUSY
—
BUSY
—
BUSY
—
BUSY
—
BUSY
BUSY
BUSY
Rev. A
Advertisement
Table of Contents
