2-46 Installing the Terminal
Powered Serial Port Jumper Settings and Fuses
The four serial ports have jumper options for either Ring Indicator (RI), fused +12 V, or
fused +5 V on pin 9. When set to powered each port is capable of supporting up to 1.5 A
(Max.) and is protected with self-healing Poly-Fuse. The default setting for all four ports
is Ring Indicator.
The +24 V printer and cash drawer circuits are also protected by a self-healing Poly-
Fuse. There is an LED fuse indicator on the I/O Panel, which indicates that the 24 V fuse
is blown. The cause of the overcurrent must be removed and the fuse allowed to cool
before being used again. A few minutes are required for the fuse to cool and reset.
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