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 209
CPE040
Consume /
READ
35.08
47.12
Produce /
WRITE
75.16
103.0
Data Transfer Time
Note: This is the time required to transfer the data between the CPU module and the rack-based
Ethernet module. EGD data transfer times do not increase linearly in relation to data size.
Please use the data values in the table below to estimate data transfer times.
Note: CPE modules do not need to use this table with respect their embedded Ethernet port, as
there is no transfer of data across the backplane related to EGD traffic.
CPU
Data Size (Bytes)
Direction
Embedded
Ethernet
Interface (µS)
Rack-based
Ethernet Module
(µS)
CPU310
NIU001
88
1
Consume / READ
NA
9.3
100
Consume / READ
NA
51.8
200
Consume / READ
NA
97.9
256
Consume / READ
NA
123.8
1
Produce / WRITE
NA
6.5
100
Produce / WRITE
NA
14.1
200
Produce / WRITE
NA
17.7
256
Produce / WRITE
NA
19.3
CPU315
CPU320
1
Consume / READ
NA
6.2
100
Consume / READ
NA
49.5
200
Consume / READ
NA
96.4
256
Consume / READ
NA
122.8
1
Produce / WRITE
NA
3.4
100
Produce / WRITE
NA
9.9
200
Produce / WRITE
NA
14.9
256
Produce / WRITE
NA
16.5
CPE010
1
Consume / READ
4.1
8.8
100
Consume / READ
25.7
23.5
200
Consume / READ
49.0
38.6
256
Consume / READ
61.4
46.8
1
Produce / WRITE
1.9
8.8
100
Produce / WRITE
4.0
16.5
200
Produce / WRITE
6.0
22.2
256
Produce / WRITE
7.1
25.1
88
EGD performance is different on the IC695NIU001+ (versions-AAAA and later) compared to the IC695NIU001. In general, consumed data
exchanges with a size greater than 31 bytes will result in contributing less of a sweep time impact and data exchanges with a size less than
that will contribute slightly greater sweep impact. All produced exchanges on the IC695NIU001+ will appear to have a slightly greater sweep
impact when compared to the IC695NIU001.

Emerson PNC001-A Series Specifications

General

Brand	Emerson
Model	PNC001-A Series
Category	Controller
Language	English