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EPSON PRINTERS
6.8.2 Setting The Switches And Jumpers On Board #8148
There are two DIP switches and 16 junnpers on the #8148 interface board.
They are used for the selection of various conditions by the user. The
function and factory setting of each switch and jumper are shown in Tables 6-
18, through 6-23
Table 6-18 Setting of DIP Switch 1
sw
Function
ON
OFF
Factory
Setting
1-1
Word length selection
7 bits
8 bits
OFF
1-2
Parity check enable/disable
Enable
Disable
OFF
1-3
Odd/Even Parity check
Even
Odd
OFF
1-4
Flag positive/negative polarity
selection
Negative
(Note 2)
Positive
(Note 1)
OFF
1-5
ON
1-6
Bit Rate Selection
See Table 6-19
OFF
1-7
ON
1-8
OFF
Note;
1 Positive: Data Entry Enabled Reverse Channel ON ( + 3\/to + 27V)
Data Entry Disabled Reverse Channel OFF(-3Vto -27\/)
2. Negative:
Data Entry Enabled Reverse Channel OFF (-3\/to-27V)
Data Entry Disabled Reverse Channel ON (+ 3V to + 27V)
6-21
GENERAL
Table 6-19 Bit Rate Selection
Bit rate
SW1-5
SW1-6
SW1-7
SW1-8
75
ON
ON
ON
ON
100
ON
ON
ON
OFF
134.5
ON
ON
OFF
ON
150
ON
ON
OFF
OFF
200
ON
OFF
ON
ON
300
ON
OFF
ON
OFF
600
ON
OFF
OFF
ON
1200
ON
OFF
OFF
OFF
1800
OFF
ON
ON
ON
2400
OFF
ON
ON
OFF
4800
OFF
ON
OFF
ON
9600
OFF
ON
OFF
OFF
19,200
OFF
OFF
ON
ON
Note:
1. Combinations other than those shown above will betaken as 19,200 BPS.
2. The operation over 1,200 BPS in current loop mode is not guaranteed.
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