RS-232 and RS-422 Serial Interface ConfigurationYour printer is configured as the factory to match the interface you specified. Byusing the operator panel, you may verify and change several interface parametersto meet specific application requirements.Refer to “RS-232 and RS-422 Serial Interfaces” on page 206 for RS-232 and RS-422parameter descriptions and information for selecting values for the followingparameters:RS-232 and RS-422:v Baud rate (data rate selected from the operator panel)v Data Bits (7 or 8 Bits)v Stop Bits (1 or 2 Bits)v Parity (None, Odd, Even, Mark, or Sense)RS-232 only:v Data Terminal Ready logicv Request to Send logicSome application programs require a unique configuration. If the printer is notworking properly in the configuration you selected, contact an IBM servicerepresentative.One Char EnquiryWhen enabled, and the IGP feature is available, a status byte is sent back to thehost 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 sentwhether the printer is online or offline. The SFCC enquiry will only be processedwhen the printer is online.Poll CharacterThis option is used when One Char Enquiry is enabled and the IGP feature isavailable. Whenever the printer receives this character, it sends a response to thehost indicating the current state of the printer. It may be configured from 0through 255. The default value is 0.Chapter 5. Printer Interfaces 209
