The
Controller Performance dialog helps identify
potential performance issues in
MQ, MX,
PK, SX,
SQ, and SZ controllers or Ethernet I/O cards (EIOC). To
open the
Controller Performance dialog, right-click a
controller, and then select
Time Utilization Chart from the shortcut menu.
Table: Performance Tips
| Control
|
Control performance
represents the amount of load on the controller as a result of module
execution. Control loading can be reduced by lowering module execution rates.
For example, a module that executes at a scan rate of 200 ms will result in
five times the control load as a module configured with a scan rate of one
second. Verify that modules are not executing faster than they need to be,
based on process characteristics.
|
| Comms
|
Communication
performance represents the amount of controller resources consumed to transmit
and receive data over the controller’s Ethernet networks. This includes both
the primary and secondary active control networks. For the SZ controller model,
this also includes the Local Safety Network and the MODBUS port, if enabled.
Communication loading
can be reduced by removing parameters from displays, eliminating
controller-to-controller references, and setting the scan rate appropriately,
based on process characteristics, for
all
types of remote network I/O, such as
Zone 1 and Zone 2 I/O or CHARMs I/O cards.
|