Jetter JC-3 Series, Руководство пользователя

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Jetter AG Controlling printer and serial interfaces | 4
Application-oriented manual – Control of alphanumeric HMIs (LCD) and printers 44
4 Controlling printer and serial
interfaces
This chapter describes how to control printer and serial interfaces from within the
application program of a controller.
Controlling the
interfaces
Printer and serial interfaces can be controlled in 2 ways:
■ Direct access to registers of the interface
■ Using display functions included in the STX language set
Supported interfaces
The following table lists the printer and serial interfaces supported by the con-
troller. It also indicates the device number the display command needs to ad-
dress in order to output information to the interface.
Module Interface Device number
JX2-PRN1 Centronics printer mod-
ule 8
User-programmable se-
rial interface Serial interface of the
CPU 9
JX2-SER1 Serial interface module 11
JX3-MIX2 Serial interface on the
module 11
Configuring
interfaces
For more information on how to configure and program interfaces refer to the
documentation on the corresponding module.
INFO
Further information
For more information on this subject refer to the application-
oriented manual
User-Programmable Interfaces available for
download from our homepage .
Direct interface
access
To output special or control characters or to retrieve the state of the external de-
vice, direct access to the registers of the interface is required. For more informa-
tion on how to access registers refer to the documentation on the corresponding
module.
Display functions
The controller provides the following display options:
■ Displaying text strings
■ Displaying the contents of variables