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Chapter 2 Specification of Communication port for CPU module

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2.3.3 General-purpose port

Serial communication port can be used as a general-purpose port. When it is specified as a general-purpose port,

the transmitting and receiving operations are controlled by the user program. The specifications for the

general-purpose port is shown in the table 2.24.

For setup and setting of the connected cables, please check beforehand whether it is user as the purpose.

Table 2.24 Specifications for a general-purpose port

Item Specification

Communication speed 300 bps、600 bps、1,200 bps、2,400 bps、4,800 bps、9,600 bps、19,200 bps、

38,400 bps、57,600 bps

Interface RS-232C RS-422 RS-485

Maximum cable length 15 m 500 m 500 m

Connection mode (Maximum

connected units)

1 : 1 1 : 1 / 1 : N (32 units) 1 : 1 / 1 : N (32 units)

Communication system Half duplex system

Synchronization system Start-stop synchronization system

Startup system One-side startup system using the host side command

Transmission system Serial transmission (Bit serial transmission)

Transmission code Definition by user

Transmission code

configuration

Stop bit (1 or 2 bits)

Parity bit (None or Odd number or Even number)Start bit (1 bit)

Data (7 or 8 bits)

Transmission code outgoing

sequence

out from the lowest bit in character units

Error control Vertical parity check, Overrun check, Framing check

Transmission unit Message unit (variable length)

Maximum message length 1,024 bytes (including control characters)

Control procedure No procedure

Control code Definition by user

Connector used 8-pin modular connector (RJ-45 type)

* The setting information becomes effective when the power supply turns on next.

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RTS WM300 Dokumentacja Strona 53