Emerson PNC001-A Series User Manual

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Appendix A
GFK-2222AK October 2019
Serial I/O, SNP & RTU Protocols 207
per word analog I/O data in the main rack
24.0
5.0
4.0
4.0
5.0
per word analog I/O data in expansion racks
34.0
11.0
8.0
8.0
11.0
Worksheet B: Genius I/O Sweep Time
Use the following worksheet for predicting the sweep impact due to Genius I/O. The
sweep impact times can be found in Sweep Impact Time of Genius I/O and GBCs.
Open backplane communications window
______
= ______
GBC poll for background messages
Number of GBCs
______
x ______
= ______
GBC I/O scan for the main rack
Number of GBCs in the main rack
______
x ______
= ________
GBC I/O scan for the expansion rack
Number of GBCs in the expansion rack
______
x ______
= ________
Input block scan segments—number of
I/O block scan segments—sweep impact
______
x ______
= ______
Output block scan segments—number of
I/O block scan segments—sweep impact
______
x ______
= ______
Bytes of discrete I/O data on GBCs—main rack
Sweep impact/bytes of discrete I/O data—main rack
______
x ______
= ______
Bytes of discrete I/O data on GBCs—expansion racks
Sweep impact/bytes of discrete I/O data—expansion racks
______
x ______
= ______
Words of analog I/O data on GBCs—main rack
Sweep impact/word analog I/O data—main rack
______
x ______
= ______
Words of analog I/O data on GBCs—expansion racks
Sweep impact/word analog I/O data—expansion racks
______
x ______
= ______
Predicted Genius I/O Scan Impact
______
A-3.5 Ethernet Global Data Sweep Impact
Note: Refer to Section, A-3.6 for information on standalone models supporting Embedded
Ethernet interface.
Depending on the relationship between the CPU sweep time and an Ethernet Global Data
(EGD) exchange’s period, the exchange’s data may be transferred every sweep or
periodically after some number of sweeps. Therefore, the sweep impact varies based on
the number of exchanges that are scheduled to be transferred during the sweep. All of

Emerson PNC001-A Series Specifications

General

Brand	Emerson
Model	PNC001-A Series
Category	Controller
Language	English