Watlow CLS - Manual (Page 119)

Troubleshooting
CLS User’s Guide 111
From the setup menus, make sure that the communications parameters
(address, error checking and baud rate) are set correctly for each CLS in
your system.
Every controller must have a separate address, starting with 1 and
increasing by 1 for each controller.
The error checking method and baud rate must be set the same way in
the controller's setup menus and in ANASOFT.
Ground Loops
On some computers, the RS-232 common wire is tied to earth ground.
Since the CLS ground is also tied to earth ground, this arrangement
creates a ground loop which may affect communications and other CLS
functions. To avoid ground loops, either use an optically isolated
communications adapter or disconnect the CLS from earth ground and
tie a .1 µF capacitor from CLS DC common to earth ground.
Software Problems
ANASOFT
Consult the ANASOFT User’s Guide for help with ANASOFT.
User-Written Software
If you don't want to use ANASOFT as your software interface to the
CLS, you are responsible for the correct operation of the software you
buy or write. You can request technical documentation from Watlow
Anafaze if you want to write your own software. Watlow Anafaze will
answer any technical questions that arise during your software
development process, but Watlow Anafaze does not otherwise support
user software in any way.
Changing the EPROM
Changing the EPROM involves minor mechanical disassembly and
reassembly of the controller, but you don't need any soldering or
electrical expertise. The only tools you need are a Phillips head
screwdriver and a small flathead screwdriver.
NOTE
If you change the EPROM, you must perform a No Key
Reset for the EPROM change to take effect. A No Key
Reset changes all controller parameters back to their
default values, so you must reenter the desired values from
ANASOFT or from the controller front panel after you
change the EPROM.
1. Power down the controller. Be sure to take antistatic precautions.