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WATLOW Series 988 User’s Manual 8.5
General Software Features, Chapter 8
General Software
TLTL
WW
WW
AA
PROCESS
L1 L2 L3L4
DEV
% OUT
DISPLAY
MODE
AUTO
MAN
SERIES 988
TLTL
WW
WW
AA
PROCESS
L1 L2 L3L4
DEV
% OUT
DISPLAY
MODE
AUTO
MAN
SERIES 988
TLTL
WW
WW
AA
PROCESS
L1 L2 L3L4
DEV
% OUT
DISPLAY
MODE
AUTO
MAN
SERIES 988
TLTL
WW
WW
AA
PROCESS
L1 L2 L3L4
DEV
% OUT
DISPLAY
MODE
AUTO
MAN
SERIES 988
TLTL
WW
WW
AA
PROCESS
L1 L2 L3L4
DEV
% OUT
DISPLAY
MODE
AUTO
MAN
SERIES 988
Test
Chamber 1
output 4
personal
computer
with EIA/TIA-422 port
Test
Chamber 2
Test
Chamber 3
Test
Chamber 4
Test
Chamber 5
output 4output 4output 4output 4
Sample Application
A test engineer uses Series 988s to control the temperatures of several
automated test chambers. His computer is linked to the controllers
through its EIA/TIA-422 serial communications port. His computer pro-
gram monitors the temperatures of the chambers and initiates automatic
test sequences when certain program parameters are met. After complet-
ing a sequence, the computer loads the next temperature to the controller.
The computer periodically interrogates each controller for its process tem-
perature, set point and alarm status. This information is stored on a disk
to provide test verification data for the completed products.
Figure 8.5 - Test
chambers with
communications.