Continental Access SUPERTERM CIC1800, Инструкция по установке и обслуживанию, Страница: 48 / 92

COMMUNICATION CONNECTION
Superterm CIC1800 / CICP1400UL 48
RS-422 to RS-422 REPEAT Network
If the first Superterm in a network is more than 50
feet (15.2m) from the host computer, the polling
line from the host computer must use RS-422
standards.
A Continental Instruments RS-422 Polling Line
Converter may be used at the host computer to
convert RS-232 to RS-422.
Figure 32 shows the required connections for an
RS-422-toRS-422 REPEAT network.
Table 32 lists the necessary connections between:

A host computer and the first Superterm in the
network,
and

The first Superterm in the network and the
remaining Superterm (62 maximum) in a
network.
RS-422 to RS-422 REPEAT Drain Wires
Ground the drain wires for all RS-422 cables in the
network at each individual Superterm in the
network.
RS-422 to RS-422 REPEAT Jumper Setting
Operating a Superterm network in the REPEAT
mode requires setting the MODE 1 jumper and the
EOL2 jumper.
Refer to page 70 for information regarding setting
the MODE1 jumper.
Refer to page 66 for information regarding setting
the EOL2 jumper.
Table 32 - RS-422 to RS-422 REPEAT Network Connections
Host Computer Superterm #1 Superterm #2 Superterm 3# Superterm #4 next Superterm
MODE1 jumper= RPT MODE1 jumper= RPT MODE1 jumper= RPT MODE1 jumper= RPT MODE1 jumper= RPT
Signal EOL2 jumper = IN
Connector/Pin EOL2 jumper = IN
Connector/Pin EOL2 jumper = IN
Connector/Pin EOL2 jumper = IN
Connector/Pin EOL2 jumper = IN
Connector/Pin
RS-422 TXD+
RS-422 TXD-
RS-422 RXD+
RS-422 RXD- POLL 13 (MD/R+)
POLL 14 (MD/R-)
POLL 11 (MD/T+)
POLL 12 (MD/T-)
POLL 7 (RPT/T+)
POLL 8 (RPT/T-)
POLL 9 (RPT/R+
POLL 10 (RPT/R-) POLL 13 (MD/R+)
POLL 14 (MD/R-)
POLL 11 (MD/T+)
POLL 12 (MD/T-)
POLL 7 (RPT/T+)
POLL 8 (RPT/T-)
POLL 9 (RPT/R+)
POLL 10 (RPT/R-) POLL 13 (MD/R+)
POLL 14 (MD/R-)
POLL 11 (MD/T+
POLL 12 (MD/T-)
POLL 7 (RPT/T+)
POLL 8 (RPT/T-)
POLL 9 (RPT/R+)
POLL 10 (RPT/R-)
POLL 13 (MD/R+)
POLL 14 (MD/R-)
POLL 11 (MD/T+)
POLL 12 (MD/T-) >>>>
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