
Installation Procedures
13
The controller LAN port is located along the lower left side of the optional expansion
board. It provides synchronous data link control (SDLC) communication and supports
the primary RS485 controller LAN connection.
A five-pin terminal block (TB1) provides connection of the RS485 shielded twisted pair
cable (see
1.
Connect the Com + line to terminal 1.
2.
Connect the Com – line to terminal 2.
3.
Terminals 3, 4, and 5 are not used.
Caution:
Ensure that you connect terminal 1 to 1, and terminal 2 to 2 on all controllers. The LAN
cable shield must be grounded at
only
one location along the controller LAN (typically at
the I/SITE LAN).
Connecting the Power Supply
Note:
Operational errors may occur if equipment is inadequately grounded. Refer to
during equipment installation.
Electrical power connections for the 24 VAC input power are located along the lower-left
corner of the controller at TB1 (see
Figure 8. Controller LAN Connections
P1
1 2 3 4 5
TXD
RXD
DCD
RS485 Port
TB1
COM +
COM –
Earth ground shield at only one
location on the controller LAN
(typically at one end).
Controller LAN
Controller LAN
Expansion Board
Splice shield drains at each
controller location.
Note:
Содержание 7798 I/SITE LAN
Страница 1: ... Installation Guide 7798 I SITE LAN I SITE LAN for I NET Building Automation Systems TCON138 01 99 vi ...
Страница 50: ......
Страница 55: ......