Modbus RTU to Modbus conversion

Modbus field devices use usually serial mode (RTU or ASCII)

protocol while the SCADA communication uses TCP/IP based

Modbus TCP protocol. The Modbus user community has

defined the functionality for required protocol integration, that

is, how the Modbus RTU devices can talk to the Modbus TCP

SCADA system. This functionality is a protocol conversion

and it is implemented in ARC600. Many industrial devices like

PLCs and RTUs support RS-485 Modbus RTU mode. In

RS-485 mode, ARC600 can integrate unlimited number of

serial slaves to TCP/IP network (SCADA).

ARC600 has two application serial ports. Serial port 1 is

configurable to either console or data mode and it supports

only RS-232. while serial port 2 is configurable to multiple

serial modes (RS-232/RS-422/RS-485). Serial port

connectors are 9-pin D-sub (male) connectors.