990XCP98000 SQUARE D, 990XCP98000 Datasheet - Page 241

• 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

Examples of Modbus TCP/IP function codes for accessing data
and diagnostics.
Functions
Modbus TCP/IP function codes
Bit access Read n input bits
Read 1 input word
Read n input words
Write 1 output word
Write n output words
Read device ID
Read n output bits
Read exception status
Write 1 output bit
Write n output bits
(continued)
dec
02
01
07
05
15
04
03
06
16
43/14
10
2B/0E
hex
02
01
07
05
0F
04
03
06
Modicon
automation platform
System approach
Ethernet TCP/IP communication services
Modbus, the industry communication standard since 1979, has been combined with
Ethernet TCP/IP, the medium for the Internet revolution, to form Modbus TCP/IP,
a completely open Ethernet protocol. The development of a connection to Modbus
TCP/IP does not require any proprietary component, nor purchase of a license.
This protocol can easily be combined with any product supporting a standard TCP/IP
communication stack. The specifications can be obtained free of charge from the
following web site: www.modbus-ida.org.
The Modbus application layer is very simple and universally known with its 9 million
installed connections. Thousands of manufacturers are already implementing this
protocol. Many have already developed a Modbus TCP/IP connection and many
products are currently available.
The simplicity of Modbus TCP/IP enables any field device, such as an I/O module,
to communicate on Ethernet without the need for a powerful microprocessor or a lot
of internal memory.
Because of the simplicity of its protocol and the high speed of 100 Mbps Ethernet,
Modbus TCP/IP delivers excellent performance. This means it is possible to use this
type of network in real-time applications such as I/O scanning.
The application protocol is identical on serial link Modbus, Modbus Plus or Modbus
TCP/IP. This means that messages can be routed from one network to another
without changing protocol.
Since Modbus is implemented on top of the TCP/IP layer, users can also benefit from
IP routing enabling devices located anywhere in the world to communicate without
worrying about the distance between them.
Schneider Electric
Modbus TCP/IP network to existing Modbus Plus or Modbus serial link networks.
The IANA organization (Internet Assigned Numbers Authority) has assigned the fixed
port TCP 502 (“Well known” port) to the Modbus protocol. Thus Modbus has become
an Internet standard.
A study by the ARC Advisory Group, a leading analyst in the automation and
software sectors, shows that Modbus TCP/IP is the world's leading Ethernet
industrial protocol in terms of units sold in 2004.
Modbus and Modbus TCP/IP are recognized by the IEC 61158 international
standard as a fieldbus. They are also compliant with the “Chinese National Standard”
managed by ITEI.
CiA DSP 309-2 provides a standardized mapping of CANopen data for transport on
Modbus TCP/IP Ethernet networks. The specification reserves Modbus function
code 43/13 for this purpose. This function code is reserved exclusively for CANopen.
Maximum size of data:
b
b
Functions (continued)
Modbus
Modbus TCP/IP, simple and open
Modbus TCP/IP, high-performance
Modbus TCP/IP, a standard
Interfacing CANopen with Modbus TCP/IP
Modbus TCP/IP characteristics
Read: 125 words or registers
Write: 100 words or registers
®
standard communication protocol
®
offers a complete range of gateways for interconnecting a
®
Quantum
™
6/23
10
10
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9