Chapter 3: Installation  3-7 
Modifying the Scanner Program 
The 7893 comes from the factory with all programming parameters set to default values. For 
changes on any values that do not match the system requirements, refer to Chapter 5, 
Programming. 
Communications Protocol 
The Communications Protocol programming mode selects the protocol that the 7893 uses to 
communicate with the host terminal. 
Note:  The factory sets the Communications Protocol according to the specifications on your 
order. Since there is no default Communications Protocol; the Default tag does not change this 
parameter. 
IBM RS-485 
The 7893 supports the IBM 468x/9x format and use the same protocol found on IBM host 
terminals. 
RS-232 
RS-232 is used to connect the 7893 to almost any RS-232 type of communications device. This 
protocol uses 7-bit ASCII to send tag to the device. 
IBM USB 
The 7893 can communicate to the host terminal through a USB cable. This parameter enables 
the IBM-USB format. 
NCR (RS-232) USB 
The 7893 can communicate with the host terminal through a USB cable. This parameter 
enables the NCR (RS-232) format. 
Note:  Two programming tags must be scanned to enable this parameter: Hex E followed by 
Hex 0. 
Wedge 
The 7893 can communicate to the host terminal through a Wedge cable.