Table of Contents
Advertisement
REV.-A
DIP Switch Settings
Table 3-3 shows the 8143 DIP switch settings, and Table 3-4 lists the bit rates selected by the DIP switch
settings. When a standard 8-bit parallel interface is used instead of the 8143 I/F board, DIP switch
1-8 should be turned off.
Table 3-3. DIP Switch Settings
DIP SW No.
Function
ON
OFF
1-1 (JB3)
Bit rate selection
See Table 3-4.
1-2 (J817)
Data length selection
7 bits
8 bits
1-3 (JB 1)
Bit rate selection
See Table 3-4.
1-4 (JB2)
Bit rate selection
See Table 3-4.
1-5 (JO/E)
Parity selection
Even
Odd
1-6 (JPDS)
Parity selection
Enabled
Disabled
1-7 (JB4)
Bit rate selection
See Table 3-4.
1-8 (PIS)
#
8143 I/F selection
Enabled
Disabled
Table
3-4.
Bit Rate Selection
Bit Rate
SW1-7
SW1-1
SW1-4
SW1-3
Bit Rate
SW1-7
SW1-1
SW1-4
SW1-3
(BPS)
(JB4)
(JB3)
(JB2)
(JB 1)
(BPS)
(JB4)
(JB3)
(JB2)
(JB1 )
75
ON
ON
ON
ON
1,800
OFF
ON
ON
ON
110
ON
ON
ON
OFF
2,400
OFF
ON
ON
OFF
134.5
ON
ON
OFF
ON
4,800
OFF
ON
OFF
ON
150
ON
ON
OFF
OFF
9,600
OFF
ON
OFF
OFF
200
ON
OFF
ON
ON
19,200
OFF
OFF
ON
ON
300
ON
OFF
ON
OFF
19,200
OFF
OFF
ON
OFF
600
ON
OFF
OFF
ON
19,200
OFF
OFF
OFF
ON
1,200
ON
OFF
OFF
OFF
19,200
OFF
OFF
OFF
OFF
NOTE: In the current loop operation, normal data transfer cannot be guaranteed at a bit rate greater
than 1200 BPS.
Handshaking Timing
The handshake controls are shown in Table 3-5.
Table
3-5. 8143
Handshaking Control
Transmission
Flag
X-ON/OFF Control
Possible
Resets when the vacant area of the input
Sends X-ON when the vacant area of the input
buffer is over 512 bytes.
buffer reaches 512 bytes.
Impossible
Sets when the vacant area of the input buffer
Sends X-OFF when the vacant area of the
is 256 bytes or less.
input buffer reaches 256 bytes.
Error Handling
Errors are processed as follows:
Parity error:
an asterisk
"*"
is printed.
Overrun error:
ignored.
Framing error:
ignored.
3-3
Advertisement
Table of Contents
