Manual
Installing the Smart Transmitter Interface
Products
Chapter 2
2-9
Figure 2.6
Attaching
Plugs to the Digital Communications Cable
90074
1770HT1
1770HT8
1
17
shield
1
17
N/C*
*N/C = no connection
The Communications Controller can handle up to 32 HART channels via
the Terminal Blocks. However, since the 32 channels can be divided
among as many as four separate terminal blocks, the Communications
Controller needs to know where one Terminal Block ends and the next
begins. That is, it needs to know which of the 32 channels belong to which
individual Terminal Block, and whether it is an 8 or a 16 channel block.
Each Terminal Block has a set of board address jumpers located just to the
right of the black cover near the top edge of the board (see Figure 1.2 and
Figure 1.3). To set a jumper block, lift the black jumper off the pins it is
currently on, re-position it, then push into place. (See Figure 2.7.) Set the
board address jumpers as shown in Figure 2.8.
Figure 2.7
Jumper
and Pins
90057
Setting the Board Address
Jumpers