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Description
Overview
Essential details：CI867A 3BSE092689R1 Modbus TCP Interface ABB
Products Description
MODBUS TCP is an open industry standard widely spread due to its ease of use. It is a request response protocol and offers services specified by function codes.
MODBUS TCP combines the MODBUS RTU with standard Ethernet and universal networking standard TCP. It is an application-layer messaging protocol, positioned at level 7 of the OSI model. The CI867A/TP867 is used for connection between an AC 800M controller and external Ethernet devices using Modbus TCP protocol.
The CI867 expansion unit contains the CEX-Bus logic, a communication unit and a DC/DC converter that supplies appropriate voltages from the +24 V supply via the CEX-Bus. The Ethernet cable must be connected to the main network through an Ethernet switch.
The CI867A module will only work with System 800xA 6.0.3.3, 6.1.1. and subsequent versions.
Features and benefits
- The CI867A can be set redundant and supports hot swap.
- CI867A is a single channel Ethernet unit; Ch1 supports full duplex with 100 Mbps speed. Both master and slave functionality are supported.
- A maximum of 70 slave and 8 master units per CI867A can be used.
CI867A
What are the two different ones you mean? FX2N and PLC?
PLC is logic can be turned into controller English abbreviation, you learn FX2N is Mitsubishi PLC inside a FX series.
Expansion unit and expansion module should be a kind of equipment, may be to see two places, there is a difference in the name of PLC by the central processor CPU module, power module, input and output module (analog and digital modules) and expansion module, in general, the first three are integrated in a whole module, For example, you learn FX2N you see the entity is a square module, when you design the actual application points are not enough, you need to use the extension module, can be connected with the PLC body through a special data line. Expansion module is also input/output module, input/output points can be selected according to the actual application.
There are three main differences between PLC expansion module and PLC host.
1. Functional differences:
PLC expansion module is mainly in order to enrich the PLC host function to use, the main commonly used digital extension module, analog extension module, communication module. In many cases, due to the complex control requirements of the control object, these modules are not integrated into the host, so it is necessary to add these extension modules to meet the system control requirements.
PLC host adopts a programmable memory, in its internal storage of the execution of logic operations, sequence control, timing, counting and arithmetic operations and other operation instructions, through digital or analog input and output to control various types of mechanical equipment or production process.
2. Differences in use
PLC expansion module can not be used alone, it just cooperate with the host to increase the function. Just like we use the computer, it has its own function, and if you want to print things to connect to the printer, the computer is equivalent to the PLC host, the printer is equivalent to the expansion module.
PLC host according to the production control needs, can be used alone to complete the work, only in their own points are not enough or need to increase other functions will be added according to the requirements of the expansion module.
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sunny He
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