Intermec IV7 Basic Reader Interface Programmer's Reference Manual (BRI version - Page 133
Antennas, GPIO, Reader Attributes, FACDFLT Command, Readers That Contain the IM4 Module
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Chapter 5 - Reader-Specific Platform Specifications Antennas Readers that contain the IM5 module have four antennas that can be controlled with the ANTS attribute. GPIO Readers that contain the IM5 module have four general purpose input ports and four general purpose output ports. The WRITEGPI command requires you to keep track of the current status of the output lines in the application software. For help, see "WRITEGPO" on page 73. Reader Attributes The default for the attribute INITTRIES is 1. Intermec recommends that you leave the INITRIES value set to 1 for readers that contain the IM5 module. For more information, see "INITTRIES" on page 92. FACDFLT Command The FACDFLT command restores the reader to its factory default configuration, as described in "Resetting the Reader to the Factory Default Configuration" on page 3. However, the reader remains in BRI mode of operation. Readers That Contain the IM4 Module RFID readers that contains the IM4 module with software version 5.xx (and higher) support the BRI. These readers deviate from the BRI specification as described in this section. For a complete list of RFID readers that contain the IM4 module, see your Intermec representative. WRITEGPI Command The WRITEGPI command sets the state of all the GP output lines available on a reader. For more information, see "WRITEGPO" on page 73. Readers that contain the IM4 module have two GP output lines, which you can set to 0 (OFF) or 1 (ON). The WRITEGPI command can include a value from 0 to 3, as shown in the next table. Choosing a Value for WRITEGPI Value 0 1 2 3 Which GP Output Lines are Turned ON? 1 2 ON ON ON ON Basic Reader Interface Programmer Reference Manual 121