Changing communications – Watlow CLS200 User Manual
Page 195
CLS200 Series User’s Guide
Chapter 9:Troubleshooting and Reconfiguring
Doc.# 0600-3050-2000
Watlow Anafaze
179
Changing Communications
To switch between EIA/TIA-232 and EIA/TIA-485, change
the jumpers as shown in Figure 9.5.
Figure 9.5 Jumper Configurations
You will need tweezers and a Phillips head screwdriver to
switch between EIA/TIA-232 and EIA/TIA-485. Follow
these steps:
1.
Power down the unit.
2.
Remove the controller’s metal casing. See Replacing
the EPROM on page 176 for step-by-step instructions.
3.
Find jumpers JU2, JU3, JU4, and JU5 on the board.
4.
Use tweezers to carefully grasp the jumpers and gen-
tly slide them off the pins.
5.
Use tweezers to gently slide jumpers JU2, JU3, JU4
and JU5 onto the correct pins (see Figure 9.5).
6.
If you are configuring the controller as the last device
on an EIA/TIA-485 network, move JU1 to the B posi-
tion.
7.
Reassemble the controller.
JU1
JU2
JU3
JU4
JU5
A
B
A
B
A
B
Configured for
EIA/TIA-232
Configured for
EIA/TIA-485
Last controller in
system configured
for EIA/TIA-485