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Chapter
5
RS-232 And RS-422 Serial Interfaces
RS-232 And RS-422 Serial Interface Configuration
Your printer is configured at the factory to match the interface you specified.
By using the operator panel, you may verify and change several interface
parameters in order to meet specific application requirements.
Refer to Chapter 4, "Configuration Menus," for RS-232 and RS-422
parameter descriptions and information on selecting values for the following
parameters:
RS-232 and RS-422:
•
Baud Rate (data rate selected from the operator panel)
•
Data Bits (7 or 8 Bits)
•
Stop Bits (1 or 2 Bits)
•
Parity (None, Odd, Even, Mark or Sense)
RS-232 only:
•
Data Terminal Ready logic
•
Request to Send logic
Some application programs require a unique configuration. If the printer is not
working properly in the configuration you selected, contact an IBM service
representative.
One Char Enquiry
When enabled a status byte is sent back to the host when the poll character
or the command SFCC enquiry is sent to the printer (serial interface only).
The poll character is received and the status byte is sent whether the printer is
online or offline. The SFCC enquiry will only be processed when the printer is
online.
Poll Character
This option is used when One Char Enquiry is enabled. Whenever the printer
receives this character, it sends a response to the host indicating the current
state of the printer. It may be configured from 0 through 255. The default
value is 0.
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