14 ABB Automation
1MRS 750107-MUM
Serial LonTalk
Adapter
Technical Reference Manual
SLTA Option Card
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J6 is used to select whether the SLTA option card is to use automatic bit rate
detection. When this function is used the autobaud SLTA matches the serial bit rate
of the SLTA with the serial bit rate of the host. This facility cannot be used in
conjunction with a modem.
Factory default setting: autobaud disabled.
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J7, J8 and J9 are used to determine the serial communication rate of the SLTA option
card. This facility cannot be used in conjunction with autobaud. There are eight
available bit rates.
Factory default: 9600 bit/s.
6.2.3. Factory default settings
Factory default settings for jumper groups S1 and S2 are as follows:
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- DCE mode
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- Alert/Ack protocol
- Local host (state)
- Network communication disabled
Table 6.2.2-1
The selection table for jumpers J7, J8 and J9.
Serial bit rate Jumpers
(Bits per second) J7 J8 J9
14 400 0 0 0
1200 0 0 1
2400 0 1 0
9600 0 1 1
19 200 1 0 0
38 400 1 0 1
57 600 1 1 0
115 200 1 1 1
DCE DTE
S1
sslta_8
