Watlow Series 988 - Manual (Page 121)

WATLOW Series 988 User’s Manual 8.5 General Software Features, Chapter 8
General Software
TL TL W WA
PROCESS
L1 L2 L3 L4
DEV % OUT DISPLAY
MODE
AUTO MAN
SERIES 988
TL TL W WA
PROCESS
L1 L2 L3 L4
DEV % OUT DISPLAY
MODE
AUTO MAN
SERIES 988
TL TL W WA
PROCESS
L1 L2 L3 L4
DEV % OUT DISPLAY
MODE
AUTO MAN
SERIES 988
TL TL W WA
PROCESS
L1 L2 L3 L4
DEV % OUT DISPLAY
MODE
AUTO MAN
SERIES 988
TL TL W WA
PROCESS
L1 L2 L3 L4
DEV % OUT DISPLAY
MODE
AUTO MAN
SERIES 988
Te s t
Cha mbe r 1
output 4
pe rs ona l
c omput e r
with EIA/TIA-422 port
Te s t
Cha mbe r 2
Te s t
Cha mbe r 3
Te s t
Cha mbe r 4
Te s t
Cha mbe r 5
output 4 output 4 output 4 output 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.