Watlow CAS - Manual (Page 82)

72 CAS User’s Guide
Troubleshooting
From the setup menus, make sure that the communications parameters
(address, error checking and baud rate) are set correctly for each CAS 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 ANASCAN.
Ground Loops
On some computers, the RS-232 common wire is tied to earth ground.
Since the CAS ground is also tied to earth ground, this arrangement
creates a ground loop which may affect communications and other CAS
functions. To avoid ground loops, either use an optically isolated
communications adapter or disconnect the CAS from earth ground and
tie a .1
µ
F capacitor from CAS DC common to earth ground.
Software Problems
ANASCAN
Consult the ANASCAN Software Operating Manual for help with
ANASCAN.
User-Written Software
If you don't want to use ANASCAN as your software interface to the
CAS, 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.