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Channel 2 is connected to a serial printer using the cable connections shown
below.
This cable is used for CTS TIBIO/820, Okidata 82,83,84A and Epson
MX80 and MXIOO serial printers.
CH.2 -Printer Port
(OB25 Connector)
(OB25 Connector)
2
0
o 3
3
0
o 2
5
o ..
..
0
o 5
6
0
6
7
7
8
0
8
20
0
11
20
Figure 2-19 Computer to Serial Printer Connection (RS-232)
PARALLEL PORT CONNECTIONS
Connector
J
3 on the upper edge of the 631 is connected to the paralld data port
on the I/O pand using a flat ribbon cable.
The signals are listed bdow.
1. PBI
2.
GND
27. PC3
28. PCO
3 • PC6
4 • PC5
29.
GND
30 .
5 • PC4
6 •
GND
31.
32.
GND
7 •
8.
GND
33 • PA3
34. PC2
9 •
PB2
10. PB7
35.
GND
36. PAl
11 .
GND
12 • PC7
37. PAO
38.
GND
13. PB6
14.
GND
39. PA2
40. PA4
15 • PB4
16 •
GND
41.
GND
42 • PA5
"-
17. PB5
18 •
GND
43. PA6
44.
GND
19.
20.
GND
45 . PA7
46. PBO
21. PB3
22.
GND
47.
GND
4 B.
23.
GND
24.
GND
49.
50.
GND
25.
GND
26. PC1
PAx - Parallel Port A bits
PBx - Paralld Port B bits
PCx - Paralld Port C bits
Figure 2-20 631 Parallel Port Pin Listing
IMS International
5000 Series MicrocomputersI7.01.83/Page 53
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