MagTek MT-215232 RS-232 - Manual (Page 27)

Section 3. Commands, Formats, and Timing
21
USER DRIVERS
There are two user drivers activated or deactivated by commands from the Host, which can be defined in
the Host system as indicators to prompt the operator. For Example, if the Reader sent a message to the
Host indicating that it was not ready to read a card, the Host can turn one driver off. When the Host has
completed a card read process, the driver would be turned back on, and a new transition could occur.
Further applications of the two drivers include such functions as operating solenoids or relays. Ratings
for the two drivers are listed in Section 1 under Specifications. For complete specifications, visit
www.ti.com . Search ULN2003AN. Commands to activate or deactivate these drivers are shown in
Table 3-2.