How does plc1200 communicate with several 485s at the same time?

S7-1200 can expand the RS485 communication port in two ways:

1. Three communication modules can be expanded on the left side of the main body;

2. One communication template can be expanded on the body;

If RS485 devices can meet the same technical requirements such as protocol, baud rate, and verification method, communication can be achieved through the same module or template.

S7-1200 communication module:

1. Communication module CP1241, model: 6ES7 241-1CH31-0XB0, supports RS485/422;

2. Communication template CB1241, model: 6ES7 241-1CH30-1XB0, only supports RS485;

Extended information:

According to the purpose and scope of use of communication cables, it can be divided into six series of products , that is, local communication cables (including paper insulated local telephone cables, polyolefin insulated and polyolefin sheathed local telephone cables).

Long distance symmetrical cables (including paper insulated high and low frequency long distance symmetrical cables, copper core foam polyethylene high and low frequency long distance symmetrical cables and digital transmission long distance symmetrical cables), coaxial cables (including small coaxial cables, Zhongtong axial and micro coaxial cables), submarine cables (can be divided into symmetrical submarine and coaxial submarine cables).

Fiber optic cables (including traditional cable type, ribbon array type and skeleton type), radio frequency cables (including symmetrical radio frequency and coaxial radio frequency).

Communication cable manufacturing plants are distributed throughout the country. In addition to the production of long-distance communication cables and local telephone cables, China has also made great progress in the production of optical fiber cables and polyolefin insulated comprehensive sheathed all-plastic local telephone cables. Many domestic manufacturers and scientific research units have introduced technology and equipment from abroad to start production. . Every year, a small amount of polyolefin insulated polyolefin sheathed all-plastic local telephone cables are sold in China to Hong Kong, Macao, Southeast Asia and the Middle East.

Baidu Encyclopedia-rs485

Baidu Encyclopedia-S7-1200