Intermec EasyCoder 501 E Installation & Operation Manual page 142

Standard Interface "uart1:", cont.
RS-422, cont.
IC-207
RI+
/RXD
RO
RI-
DI DO+
/TXD
DO-
Intermec EasyCoder 501 E – Installation & Operation Ed. 1
On the CPU board, check:
• An optional RS-422 circuit must be fi tted on IC-207.
• Jumper must be fi tted on the lowest position of P-202 to
select RS-422.
• Jumper must be fi tted on some of P-204 to P-209 according
to the diagram below.
• Any RS-232 circuit on IC-200 (standard), jumper on P-200,
and optocouplers on IC-205 and IC-206 (optional) are of no
consequence.
P-203 External 5 Volt
Jumper fi tted connects +5V to pin 16. Caution! Max. 200 mA.
(Note that +5V requires an additional wire in the cable).
Be careful not to enable the external 5V unintentionally, which
may cause harm to the terminal, PC, or other device connected
to this port!
P-204 – P-209 Communication straps
Jumpers can be fi tted on P-204, P-205, P-206, P-207, P-208, and/or
P-209 in order to adapt the RS-422 communication to the host, as
shown in the diagram below. Normally, jumpers should be fi tted
on P-205, P-207, and P-209.
P-208
P-206 P-207
+5V +5V
P-209
P-204 P-205
Appendix 4 Interfaces
P-201
("uart1:")
+ RS422 IN 15
- RS422 IN 17
+ RS422 OUT 19
- RS422 OUT 21
141