990XCP98000 SQUARE D, 990XCP98000 Datasheet - Page 252

• Manufacturer Part Number: 990XCP98000
• Description: QUANTUM CPU BATTERY FOR S
• Manufacturer: SQUARE D

Specifications of 990XCP98000

• Rohs Compliant: YES
• Battery Capacity: 1800mAh
• Battery Technology: Lithium
• Battery Voltage: 3V
• Battery Terminals: Connector
• Weight: 0.12lb

10
10
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
Performance
Network access time NAT
Processing of Modbus
message requests
6/34
Event
CT1
Synchro pulse
Subscription
CT1
CT
NAT
Publication
NAT
Transaction time
CT
CT2 CT2
TT
(continued)
TT
CT
NAT
CT1 CT1
Action
Premium
TSX ETY 210
TSX ETY 110WS
< 25 ms
NAT
Publication
CT
feedback
Synchro
Report
CT
™
Ethernet TCP/IP
Station 1
Station 2
Station 1
Station 2
Modicon
automation platform
System approach
Ethernet TCP/IP network performance
Exchanges between the PLC processor and the Ethernet module are synchronous with
the PLC cycle, just like the I/O exchanges. Upon the occurrence of an event (an input
being set to 1 for example), a message can be transmitted only after this input has
been taken into consideration (start of the next cycle) and the Premium
PLC program has been executed, i.e. on average approximately 1.5 cycles after the
event occurred.
The network access time (NAT) shown in the table below in ms is a total of the
module transit time and the delay before the message can be transmitted on the
network.
The transaction time TT includes the delay between the transmission of a message
from a client station 1, its reception by the server station 2, processing the request,
sending back the response and it being taken into account by the station
an output for example).
As the block diagram above shows:
The transaction time TT includes the delay between publication of Global Data by
the station 1, its reception and processing by the remote station
retransmission to the initial station 1:
For an exchanged variable:
Application response time
Modbus (or Uni-TE) messaging service response time
TSX ETY 4103/5103
TSX WMY 100
TSX P57 10...57 50
< 10 ms
b
b
Global Data service response time
b
transaction time:
b
transaction time:
The transaction time TT will lie between:
The average time TT
If CT < 5 ms,
If CT
u 10 ms,
®
Quantum
av
is equivalent to:
2 x CT1 + 2 x NAT < TT < 4 x CT1 + CT2 + 2 x NAT
TT
Quantum Ethernet TCP/IP
140 NOE 771 01/111
140 CPU 113/311 pp
140 CPU 434/534 1p
< 10 ms
av
= 3 x CT1 + 0.5 x CT2 + 2 x NAT
TT = 5 to 6 x CT
TT = 3 x CT
™
140 CPU 65 150/160
140 CPU 67 160
< 10 ms
2
and its
™
or Quantum
1
(updating