4 feature 31 - dtr synchronization protocol, 5 feature 32 - parity (eighth bit control), 7 feature34-autowrap – AMT Datasouth 41AY89AR777 User Manual
Page 43: 8 feature 35 - print on receipt of carriage return
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2.5.4 Feature 31 - DTR SYNCHRONIZATION PROTOCOL
Data
Terminal
Ready (DTR) restraint mode is a synchronization protocol
between the printer and computer. This feature allows the printer to control the
data transmission from the computer by monitoring the status of the DTR line on
the RS232 interface. This enables the printer to maximize throughput without
overflowing the print buffer. The DTR line will also go busy in the event of an
error, setting the printer to local condition or a paper-out condition.
2.5.5 Feature 32 - PARITY (EIGHTH BIT CONTROL)
NOTE
Eighth bit control (Features 32 and 33) is in effect only
when the printer is transmitting.
Feature 32 is used in conjunction with Feature 33. When Feature 32 is enabled.
Feature 33 is used to select even or odd parity. When Feature 32 is disabled.
Feature 33 is used to set eighth bit marking or spacing.
2.5.6 Feature 33 - ODD/EVEN PARITY SELECTION/EIGHTH BIT
MARKING
Parity Selection (Feature 32 enabled): To select even parity. Feature 33 should be
disabled. To select odd parity. Feature 33 should be enabled.
Eighth bit marking (Feature 32 disabled): To select eighth bit spacing (eighth bit
always set low) Feature 33 should be disabled. To select eighth bit marking
(eighth bit always set high) Feature 33 should be enabled.
2.5.7 Feature34-AUTOWRAP
The printer may be configured to automatically execute a carriage return and line
feed when the printhead reaches the tight margin. To enable this capability,
Feature 34 should be set to 1. If Feature 34 is set to 0, any data after the right
margin is not printed.
2.5.8 Feature 35 - PRINT ON RECEIPT OF CARRIAGE RETURN
The printer normally begins printing data upon receipt of a paper movement
command (such as line feed, form feed, vertical tab). In some cases, the user may
wish to initiate printing without advancing the paper as in the case of “prompt”
characters transmitted from the computer.
When Feature 35 is set to 1, the printer will begin printing upon receipt of a
carriage-return command and does not require receipt of a paper-movement
command.
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