Lika EMC58 MT, Руководство пользователя

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and passengers. The data is actually transported by protocols.
This is comparable to cars and commercial vehicles
transporting passengers and goods on the highway.
Tasks handled by the basic Transmission Control Protocol (TCP)
and Internet Protocol (IP) (abbreviated to TCP/IP):
1. The sender splits the data into a sequence of packets.
2. The packets are transported over the Ethernet to the
correct recipient.
3. The recipient reassembles the data packets in the
correct order.
4. Faulty packets are sent again until the recipient
acknowledges that they have been transferred
successfully.
Topology Network structure. Commonly used structures:
•
Line topology;
•
Ring topology;
•
Star topology;
•
Tree topology.
Refer to page 26.
Transmission rate
Data transfer rate (in bps). Refer to page 26.
Wide area network
(WAN) A large network that is a collection of smaller networks
separated by routers. The Internet is an example of a very
large WAN.
Write Multiple Registers
(16, 0010hex)
This function code is used to WRITE a block of contiguous
registers (1 to 123 registers) in a remote device. Refer to page
45.
Write Single Register (06,
0006hex) This function code is used to WRITE a single holding register in
a remote device. Refer to page 43.