Remote io module manufacturers: design features of remote io module


Release time:

2022-05-13

Remote io module manufacturers produce remote io modules that can be controlled by remote commands. Industrial-grade remote and control modules provide flexible scalability of IO points. When the remote IO module executes the communication protocol, it uses the command subset of the MODBUS-RTU protocol from the host, using the read register instruction and the single register setting instruction. Then, let's learn about the design features of the remote io module!

Remote io module manufacturers produce remote io modules that can be controlled by remote commands. Industrial-grade remote and control modules provide flexible scalability of IO points. When the remote IO module executes the communication protocol, it uses the command subset of the MODBUS-RTU protocol from the host, using the read register instruction and the single register setting instruction. Then, let's learn about the design characteristics of the remote io module together with the remote io module manufacturer!

 

Communication mode: no pass-through relay mode, relay server mode (optional).

Communication redundancy: peer-to-peer redundancy, which can communicate asynchronously at the same time, not simply paying for hot spares.

Communication: Serial port (RS-232, RS-485), Ethernet (virtual serial port), Ethernet (PROFIBUS-DP bus).

Communication protocols: MODBUS-RTU standard, PROFIBUS-DP protocol, SIEP-in-house protocol, and any other protocol custom protocol.

Communication speed: according to a, serial port mode (RS-485, RS-232) 9600, 14400, 19200, 38400, 57600, 115200(bit/s) B, Ethernet) network bandwidth c, PROFIBUS-DP bus: due to the hardware limitation of both communication parties, 31.25-12000 (kilobits/second).

Note: There are two ways of communication. That is, a pass-through or communication relay can be added to directly connect the product to the DCS via the standard MODBUS protocol. Adding trunks communicates with the DCS through the bridge, and adding trunks is compatible with ProfiBus protocols. From the perspective of network security, the direct way is put forward, that is, the distributed equipment is directly used as the communication slave of DCS, which can not only reduce the intermediate links, ensure the reliability and real-time of data, but also improve the communication efficiency. In addition, because the upper computer and its accompanying hardware and software resources are not needed, the cost is reduced for users and the occupied space of equipment is reduced. Even if communication fails, troubleshooting can be performed quickly and maintenance settings are simple.

remote io module design features:

A, remote I/O acquisition box with automatic inspection function, no need for regular manual inspection.

B, the remote I/O acquisition box has the function of automatically judging the open circuit and short circuit of the input signal.

C, E2PROM storage set value, cut off the power supply to maintain various parameters for a long time.

D, the use of multi-CPU action and dual-port RAM memory, does not affect the remote I/O sampling and communication, greatly improve the sampling and communication speed.

e. Adopt real-time large-capacity dual CPU and high-performance analog-to-digital conversion module design, patch process manufacturing, each CPU does different things, sampling and display are separated, and the operation speed is improved. One CPU is responsible for the main network communication, and the other CPU.

Remote io module description: The dual CPU design greatly improves system efficiency and data integrity, and can reduce the sampling time per channel to 50ms. At the same time, through the two CPU control communication part of the main network communication part, can make the main subnet relatively independent, at the same time can be two asynchronous system communication connection, realize the automatic switching without fault response, truly realize the dual network maintenance setting mode:

remote io module operating system settings, superior system settings, infrared settings mode.

(The traditional remote io module set maintenance function mainly has two kinds, one is the local setting of small operating system mode, the advantage of this mode is the positioning directly clear, the disadvantage of the set location requirements, when the front-end setting location is far away or bad, people can not reach, can not use this setting method; the second is in the notebook computer and other upper system remote setting mode,), the advantage of this mode is that it is simple to set up and can quickly set up the entire system. The disadvantage is that because the entire system cannot be in data transmission and information setting at the same time, this setting can only be used when the system is down for maintenance.

The above is the design features of the remote io module produced by the remote io module manufacturer. If you need to know more, please feel free to contact us!