23.2 Straps
1
/. Be careful not to enable the
external +5V unintentionally, since
it may cause harm to the con-
nected terminal, computer, or other
device.
Intermec EasyCoder 501 – Service Manual Ed. 7
"uart3:"
I/O connector
Communication Port "uart3:"
RS-232:
There are no straps for the RS-232 interface on "uart3:".
External +5V:
External +5V ( max. 200 mA) can be made available on pin 16 by
fi tting a strap on P-1
IN/OUT Connector
In/Out port 201 to 204:
One relay for each port switches the OUT signal to high or low as
PORTOUT ON/OFF statements are executed in the program.
Four straps, P-2, P-6, P-7, and P-8, control the relation between
relay and output signal on output ports 201 to 204 respectively:
PORTOUT stmt
PORTOUT (<nexp>) ON
PORTOUT (<nexp>) ON
PORTOUT (<nexp>) OFF
PORTOUT (<nexp>) OFF
Chapter 23 Industrial Interface Board
1
.
Strap between pins
1–2 (lower position)
2–3 (upper position)
1–2 (lower position)
2–3 (upper position)
P-1
P-8
P-7
P-6
P-2
OUT signal
Open
Closed
Closed
Open
177
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