Intermec EasyCoder 501 XP Service Manual page 119

Chapter 16 Interfaces
16.5 Industrial Inter-
face Board, cont.
Fit RS 232 circuit on IC2
No circuits on IC3, IC4 or IC18
Strap on S4 deactivated
(fi tted on one pin only)
Strap on S1 deactivated
(fi tted on one pin only)
118
Serial Port Confi guration
The serial communication port "uart2:" can be confi gured for four
different types of serial communication:
• RS-232
• RS-422 non isolated
• RS-422 isolated
• RS-485
By fi tting or removing certain circuits and straps, the desired type
of interface can be selected. This is either done at factory or by the
customer.
When fi tting circuits yourself, do it before connecting the inter-
face board and make sure that the circuits are not fi tted upside
down (see front end markings in the illustrations in this chapter.)
Also take care so all "legs" of the circuit fi t into their respective
slots in the socket and are not bent. Also, take proper precau-
tions so as to protect the board and circuits from electrostatic dis-
charges.
RS-232
IC15
R26
R30
R31
IC14
R33
REL1 REL2
P4
R50
F10
F11
R6
F12
R7
F13
F14
R4
F9
R5
F8
R51
F6
F5
F4 S4
F3
F7
F2
F1
P3
Intermec EasyCoder 501 XP – Service Manual Ed. 4
Caution!
IC16
IC8
R34
IC10
IC13
R35
R36
R37
R38
R39
R40
R41
REL3 REL4
IC12
IC7
R3
R2
R1
C3
R55
+
+
+
+
IC18
S3
C11
S2
IC4 IC3 S1
IC2
RP1
1-971606-01.P01
IC17
IC9
IC11
P2
C10
C7
C2
C1
R53
R56
R54
R8
IC6
C5
IC5
P1