EP03-300-200
December,
2003
Release 200
Version 1.0
Experion PKS CEE-based Controller Specifications and Models
24
Control Execution Environment Specifications
Table 9. Control Execution Environment (CEE) General Configuration Options
C200
Controller
ACE
Base Execution Period
50 ms CEE
5 ms CEE
500 ms CEE
Controller Redundancy Supported
Yes
No
No
Remote I/O Supported
Yes
No
N/A
I/O Module Function Block Execution Period
50 ms
5 ms
N/A
Available CM/SCM Execution Periods
50, 100, 200, 500,
1000, 2000 ms
5, 10, 20, 50,
100, 200 ms
500 ms and
1, 2, 5, 10, 20
sec
Configurable Peer-to-Peer Update Rates
(Period)
(Rate at which a CEE can subscribe to data from other
CEEs through peer-to-peer communications;
Supervisory Ethernet LAN systems have a guaranteed
pull/get request rate of 500 ms or greater)
100, 200,
500, 1000 ms
10, 20, 50, 100,
200,
500, 1000 ms
500 ms and
1, 2, 5, 10 sec
Controller Communications Performance
Peer-to-peer communication between
Controllers
allows data to be transparently shared among
separate
Control Execution Environments (CEE)
,
irrespective of controller location within a Server
domain (i.e., within a Supervisory Process Control Network). If a parameter connection can legitimately
be formed between two function blocks within a single controller, then that same parameter connection is
permitted between two function blocks located in separate controllers. All data connections are done via
data “
pulls
.” The
only
data “
push
” in Experion PKS is the output expression of a Sequential Control
Module Step function block and the output of the PUSH FB. Experion PKS provides end point
fail-safe
data protection
and
handling
. Connections are protected against failures and abnormal conditions by
always receiving either live-process data or fail-safe data.
Table 10. Controller Communications Performance
PPS = Average Parameters per Second
C200/CPM, FIM, IOL
ACE
500ms CEE
Overall Communications Performance per Experion PKS Server
Maximum Total Parameter Access Response Rate to the Server from
all Controllers combined.
(Includes Display updates, Fast/Slow History,
Excel I/ODBC Exchange, and CB Monitoring)
4000 PPS
2000 PPS
C200
50 ms CEE
C200
5 ms CEE
ACE
500ms CEE
Overall Communications Performance per C200/CPM, FIM, ACE
Maximum Total Parameter Access Response Rate
(Includes all Server Data Requests and peer communications)
2000 PPS
2000 PPS
2000 PPS
C200 Controller and ACE Notifications Performance
Maximum Number of Events
(burst condition, where event bursts will be
throttled to one burst per minute to allow the Server to process the previous
burst. The "sustained rate" may continue between bursts)
50 events
Maximum Number of Events/Second (sustained)
2/second
