29
1~N-1 unit N unit
Figure
5.17 Check the red switch
Step 2 : Remove RS485 flat cover, as shown in Figure 5.18.
Remove the two waterproof connectors on the cover; Thread the cable thought the
waterproof connectors.
Figure 5.18 Remove communication flat cover
Step 3 : Communication cables connect with RS485 module, as shown in Figure 5.19.
Loosen the four locking nuts on TB1, Lock the metal cover on TB1, Tidy up these wires
as follows: wires from the T/R1+ and T/R1- holes of TB1 come out through the bottom
holes, and these from the T/R2+ and T/R2- holes of TB1 come out through the top
holes, and tighten the nuts after connecting the wires (The removed length of the
insulation layer from the cable is 0.5mm).
Figure 5.19 Communication cables connect with RS485 module
Table 5.3 RS485 module pin definition
Pin
Pin Name
Description
1
T/R 1+
Receive and transmit