COAX INTERFACE
Coax Part # 70047201
Oki Data Printer Models
320/321
420/421
490/491
520/521
590/591
Coax Interface • 13
59350301
NOTICE
The information contained in this document is subject to change without
notice.
All trademarks, logos, and products mentioned are trademarks and/or
registered trademarks of their respective owners.
This equipment has been tested and found to comply with
the limits for a class A digital device, pursuant to Part 15
of the FCC rules and regulations. These rules are
designed to provide reasonable protection against
harmful interference when equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy, and if not
installed and used in accordance with the instruction
manual, may cause harmful interference to radio
communications. Operating this equipment in a
residential area is likely to cause harmful interference in
which case the user will be required to correct the
interference at his or her own expense.
Coax Interface • 12
7. Support Information
For specific questions regarding the Coax Interface only, please contact:
Troy Group, Inc.
2331 South Pullman Street
Santa Ana, CA 92705
Ph. 949-250-3280 or 800-332-6427 (U.S. Only)
Fx. 949-250-8972
www.troygroup.com
[email protected]
Table of Contents
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction ........................................................................................ 1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Using Pass-thru Sequences................................................................. 4
Features and Values............................................................................ 5
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ASCII Pass-thru.................................................................................. 6
Diagnostics ......................................................................................... 7
Appendix A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
EBCDIC Conversion Charts............................................................... 8
Appendix B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Decimal/HEX Conversion Table...................................................... 10
Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Coax Interface • 11
1. General Information
6. Appendix B
1.1 Introduction
This interface allows you to direct attach your Oki dot matrix printer to a
coax host, providing EBCDIC to ASCII data stream translation.
6.1 Decimal/HEX Conversion Table
The numbers on the left represent the first HEX digit and the numbers at
top represent the second hex digit.
For example, to convert the value 137 to hex, find 137 in the table. The
first HEX digit on the left row of the table is 8 and the second hex digit top
row is 9 giving a HEX value of 89.
The printer should be configured on the mainframe host as an IBM 3287.
Coax Interface • 1
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
2
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
3
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
4
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
5
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
6
96
97
98
99 100 101 102 103 104 105 106 107 108 109 110 111
7
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
8
128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
9
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
A
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
B
176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191
C
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
D
208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
E
224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
F
240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
Coax Interface • 10
2. Installation
LU3 to ASCII Conversion
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Coax Interface • 9
1. Power off the printer with which you will be attaching the interface.
Damage can occur to the interface or printer if it is connected while
printer power is on.
2. Remove the plastic punch out next to the parallel input connector on the
printer and slide the interface into the expansion slot on the back of the
printer.
Coax Interface • 2
3. Attach the coax pigtail cable to 15-pin connector on the interface.
5. Appendix A
5.1 EBCDIC Conversion Charts
The following charts illustrate the EBCDIC to ASCII conversion
performed by the interface for both LU1 and LU3 data streams.
Wherever possible the actual characters are shown. Locations with hex
numbers indicate where ASCII code point is translated to EBCDIC code
point. Empty locations indicate that no translation is performed.
LU1 to ASCII Conversion
4. Attach the coax cable from the host to the coax pigtail cable.
5. Power up the printer. The CU indicator, on the back panel of the coax
interface (green LED), will illuminate when communications has been
established with the host system.
Note
If the CU indicator does not come on within 10 seconds, verify that the host
line is active, and that all cables are connected properly.
Coax Interface • 3
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Coax Interface • 8
1
3. Configuration
4.2 Diagnostics
Print settings
Set dip-switches 1,2,3 to the ON position and then recycle power on the
printer. The interface will print a test page with its current configuration
settings.
3.1 Using Pass-thru Sequences
The interface can be configured by sending short pass-thru commands in
the data stream indicating the feature to be changed and the value it is to
have. This can be done by performing a local screen print, or the
sequences can be embedded in a simple print file.
The format for pass-thru mode is as follows:
&%SXXYYSXXYY..&%
&%
Enters Passthrough
S
Indicates the start of a sequence
XX
Is the feature number See “Features
and Values” on page 5
YY
Is the value of the feature
&%
Terminates Passthrough
Note
• XX and YY are upper-case HEX digits. S is the upper-case “S”
character.
• While in Pass-thru mode the interface does not check the feature
values to see if they are within the feature's range. It is up to the
programmer to insure that only valid values are being sent.
EBCDIC Hex Dump
Set dip switch 4 (only) to the ON position and then recycle power on the
printer. Any data received will be printed in a formatted EBCDIC hex
dump.
• Once the interface receives the &% characters, it is no longer in passthru mode and will return to normal operation.
• When setting features, only hex values may be used! If you wish to
set a value to decimal 35, you must use the hex value 23.
• See “Decimal/HEX Conversion Table” on page 10 for decimal to hex
conversion table.
Important!
On-Line programming changes are stored temporarily in RAM memory
and are not made permanent until the interface receives the command to
do so. The following string makes configuration changes permanent.
(& % S 9 5 &%)
After all the necessary configurations have been made, it is a good idea to
reset the printer so that both it and the interface will be in a known state.
Coax Interface • 7
Coax Interface • 4
This can also be done by sending a "soft reset" command (&%S8F&%),
which causes the interface to re-initialize.
Note
After the interface has received a soft reset command, the device
will drop communication with the host while the power up cycle is
executing. It is recommended that on-line configuration be limited
to initial set up or special files sent between print jobs.
3.2 Features and Values
* Bold signifies default value for programmable features.
Feature
Description
Values
02
Coax Printer Type
01 - 3287
0E
Lead-In Character PT#1
20 - FF
0F
Lead-In Character PT#2
10
Ending Character PT#3
02 - 3262
38 (Hex 26) - &
20 - FF
37 (Hex 25) - %
20 - FF
38 (Hex 26) - &
1E
NULs as spaces
21
TEXT only mode
01 - On
02 - Off
01 - On
02 - Off
8F
Soft Reset
93
Load Factory Defaults
none
none
94
Print Status Page
none
95
Make config permanent
none
4. Operation
• Ensure all of the parameters have been set up properly, the
configuration has been made permanent, and the host cable is
attached.
• Ensure the dip-switch is set to a value of “0,” which is all switches in
the “OFF” position.
• Give the printer a fresh power up or send a soft reset command to reinitialize the interface. (& % S 8 F &%)
• The Cu indicator will illuminate when the host and the printer
establish communications.
4.1 ASCII Pass-thru
Command Pass-Thru can be used to pass ASCII characters to the printer
from an IBM twinax or coax host computer.
Command Pass-Thru is character in nature, so you may send the data to
the interface by executing a local copy or screen print from your twinax or
coax host.
The following characters can be sent:
decimal 0-9 (EBCDIC F0 - F9)
or
characters A-F (EBCDIC C1- C6)
All other characters will be ignored. This is a control measure, so that only
valid characters and control codes can be sent.
Here's an example of a proper Pass-Thru sequence that will send the
ASCII ESCape character to the printer:
&%1B&%
&%
The two lead-in characters (PT#1 & PT#2), and serve to
place the interface into Pass-thru mode.
1B
The two characters representing the ASCII ESCape
character.
&%
The exit code (PT#3) and informs the interface that passthru mode will terminate.
The lead-in and exit character values must match PT#1, PT#2 and PT#3
programmed during setup.
Coax Interface • 5
Coax Interface • 6
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