CP 343-1 communications processor is the communications processor for SIMATIC S7-300. Sharing CPU communication task and allow other connections.
S7-300 through CP 343-1 with the programmer, computers, human-machine interface devices, systems, and other SIMATICS7 SIMATIC S5 programmable system device communication:
CP 343-1 communications processor is mounted on the S7-300 DIN rail can also be installed in the expansion chassis are connected via a bus connector with the adjacent module, no slot rules.
15-pin D-shaped socket for connection to Industrial Ethernet; 4-pin terminal block for connecting an external 24 volt DC power supply; RJ45 socket for quick connection to Industrial Ethernet.
CP 343-1 on Industrial Ethernet data traffic independently. The module has its own processor. Using the ISO transport protocol, TCP transport protocol, UDP transport protocol. And multi-protocol ways PG / OP communication, S5-compatible communication and other communications services. Data communication interface via ISO transport connections can transport up to 8,000 bytes of data.
In STEP7 different forms of network systems:
1,1 subnets – 1 project
2, SIMATIC S5 and other standing in a subnet
3, 2 or more subnets – 1 project
4,1 subnet – more than one item
5, a plurality of sub – multiple projects
6 connection between subnets,(ISO-on-TCP)
CP-SEND (transmission block) and CP-RECV (receive block) structure
Types and Functions CP-RECV (receive block) each terminal parameters
Types and Functions CP-SEND (transmission block) each terminal parameters
PLC ONE 