Installation Procedures
12
Connecting to the Sub-controller LAN
Note:
Operational errors may occur if equipment is inadequately grounded. Refer to
during equipment installation.
The I/SITE LAN sub-controller LAN can accommodate up to 32 MRs, DP sub-control-
lers, ASCs, or a combination of each residing on the sub-controller LAN (see
A 5-pin terminal block provides the RS485, shielded twisted-pair cable connections on
port TB2.
1.
Connect the Com + line to terminal 1.
2.
Connect the Com – line to terminal 2.
3.
Connect the return Com + line to terminal 4 (closed loop only).
4.
Connect the return Com – line to terminal 5 (closed loop only).
Connecting to the Optional Controller LAN
Note:
Operational errors may occur if equipment is inadequately grounded. Refer to
during equipment installation.
The controller LAN address and baud rate should be set after first powering up the unit and
prior to connecting the unit to the controller LAN. Refer to
“Setting the Controller LAN Baud Rate” on page 16
information.
Figure 7. Sub-controller LAN Connection
1 2 3 4 5
TB2
1 2 3 4 5
Sub-controller LAN
(Open Loop)
LAN +
LAN –
SHLD
ALT +
ALT –
MR
DPU
ASC
LAN +
LAN –
SHLD
ALT +
ALT –
TB2
Sub-controller LAN
(Closed Loop)
Earth ground at only
one location, typically
at the I/SITE.
MR
DPU
DPU
MR
ASC
Earth ground at only
one location, typically
at the I/SITE.
Содержание 7798 I/SITE LAN
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