Emerson PACSystems RX3i - Page 219

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Appendix A
GFK-2222AK October 2019
Serial I/O, SNP & RTU Protocols 211
CPU
Data Size (Bytes)
Direction
Embedded
Ethernet
Interface (µS)
Rack-based
Ethernet Module
(µS)
CPE030
1
Consume / READ
2.8
5.3
100
Consume / READ
25.8
18.7
200
Consume / READ
50.7
33.4
256
Consume / READ
60.1
40.4
1
Produce / WRITE
0.8
5.5
100
Produce / WRITE
2.5
13.1
200
Produce / WRITE
4.2
18.2
256
Produce / WRITE
5.2
21.5
CPE040
1
Consume / READ
1.9
3.85
100
Consume / READ
21.1
10.1
200
Consume / READ
43.5
31.4
256
Consume / READ
56.5
39.2
1
Produce / WRITE
0.3
3.8
100
Produce / WRITE
1.8
11.8
200
Produce / WRITE
3.6
16.8
256
Produce / WRITE
4.8
19.8
Worksheet C: Ethernet Global Data Sweep Time
Number of consumed exchanges
__________________
Sweep impact per exchange
x
__________________
=
__________________
Number of data bytes in all of the consumed
exchanges
__________________
Sweep impact per consumed data byte
x
__________________
=
__________________
Number of produced exchanges
__________________
Sweep impact per exchange
x
__________________
=
__________________
Number of data bytes in all of the produced
exchanges
__________________
Sweep impact per produced data byte
x
__________________
=
__________________