GE Energy Services
Protocol X DCA
Configuration Guide
A197-0CG-1.00-2 Restricted
x Full
WESDAC
Interface
Node
(WIN)
Protocol X
DPA Wesmain
t
Local I/O
DCA DCA
Protocol
X
Host
Wesmain
t
Display
(VT100)
Local
Hardware
Sub-Remote
HOST
Comman
d
DPA
Response
WIN Response
WIN Even
t
Protocol X WESDAC
Tables
WIN
Comman
d
Data
Reques
t
Requeste
d
Data
DCA
Comman
d
DCA Even
t
DCA
Response
DCA Even
t
DCA
Response
DCA
Comman
d
Data Update WESDAC
Tables
WIN Response
WIN Even
t
Operato
r
Reques
t
Display
Data
Local I/O
DCA Dat
a
WIN
Comman
d
Data
Data
Reques
t
Requeste
d
(SRU)
Uni
t
DPA Dat
a
Allen-Bradley ANSI X3.28
Dat
a
Allen-Bradley
ANSI X3.28
Unsolicite
d
Data
Figure 1 System Overview