75
Intermec EasyCoder 201 II – Technical Manual
P-15
RS232
CL
P-12
+5VEXT
P-10
(IC-41)
(IC-41)
IC-34
INTERFACES, cont'd.
RS 232C (V24) on "uart1:"
Continued!
P-15
(Interface select)
P-10
(DTR/RTS select)
1
/. Warning! Be careful not to enable the
external 5V unintentionally, which may
cause harm to the terminal, PC or other
device connected to this port!
RS 232C (V24) is the most common interface for serial communi-
cation with computers over short distances. The transmission can
only take place between one transmitter and one receiver. The most
simple form of two-way communication only requires a 3-wire
cable. The maximum transmission distance is about 10–15 metres
(33–49 ft.) and the maximum transmission speed is 19,200 baud.
■ Jumper must be fitted on pin 1-2 (lower position) of P-15 to
select RS 232C.
■ RS 232C circuit must be fitted on IC-34 (fitted as standard).
❑ Opto-couplers on IC-40 and IC-41 are of no consequence.
The following hardware straps can be fitted:
P-10 DTR-signal:
Pin 1–2 DTR indicates printer turned on.
Pin 2–3 A copy of the flow signal RTS is produced.
P-12 External 5 Volt
1
:
Jumper fitted connects +5V to pin 16. Warning! Max 200 mA.
P-12
(external +5V)
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