Etx/Ack; Inhibit Xmit - Genicom GEK-00027C User Manual

ETX/ACK

Protocol
ETX/ACK
ETX/ACK
Disable

Inhibit Xmit

Serial Setup
Inhibit Xmit
GEK-00028C
This option is used to configure the ETX/ACK (End of
Text/Acknowledge) settings for RS232 serial type. ETX/ACK is a
serial validity check protocol, where the host appends the ETX (end of
text) code (0X03) at the end of each data block and waits to receive
an acknowledge character (ACK=0X06) from the printer, within some
time period, prior to sending the next block of data. This is not an
ETX/ACK/NAK protocol. The printer never responds with a NAK
(0X15) even if errors are detected.
Option
Disable
Immediate
On Prn Complete
Flow Controlled
On Prn Complete may cause a reduction in throughput due to the
host waiting for the ACK before sending more data.
1. While in the Protocol menu, press the ◄ (left) or ► (right) menu
browse key until the ETX/ACK option is displayed.
2. Press the ▼ (down) menu browse key to access the ETX/ACK
options.
3. Press the ◄ (left) or ► (right) menu browse keys until the desired
ETX/ACK option is displayed in the LCD.
4. Press the Select key to enable or disable the setting. See the Set
Up Menu Map for available selections. The < symbol will now
immediately follow the enabled option.
This sub-menu is used to configure an Inhibit Xmit setting for the
serial setup for RS232 serial type.
Option
Never
Via CB (CTS)
1. While in the Serial Setup menu, press the ◄ (left) or ► (right)
menu browse key until Inhibit Xmit is displayed in the lower right
corner of the display menu.
Meaning
The ETX is ignored and no further action is taken (it
is treated as just another data character.)
The printer controller immediately replies to an ETX
with an ACK.
The printer waits until the data block has been
printed prior to sending the host the ACK character.
Allows printer to inhibit the transmission of the ACK
response if the printer is in the Off Line state, in a
printer Fault condition or when received data reches
the high water (Busy) threshold. The respective ACK
will be transmitted after the printer returns to the On
Line state, the Fault is cleared or the data in the
input buffer is decreased to the low water threshold.
This option will transmitt the ACK immediately if
there are no restrictions.
Note
Meaning
The host is prevented from controlling the printer's
ability to transmit back to the host via the CB (CTS)
hardware lead.
The host can control the inhibit transmit with the
Clear to Send (CB) lead.
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Chapter 5. Using the Set Up Menu