Download MODBUS - Fuji Electric
Transcript
1. COMMUNICATION FUNCTION 1.1 Outline • This instrument provides a communication function through RS232-C and RS-485 which allows data transmit to or receive from the host computer and other devices. • The communication system is composed of a master and slave relationship. Up to 31 of slave station (present instrument) can be connected per master station (host computer, programmable controller, graphic display panel, etc.) through RS485 interface. One slave station (this instrument) can be connected to one master station. • Because the master station can communicate with only one slave station at a time, the destination can be identified by the “Station No.” set for each slave station. • In order that the master station and slave station can communicate, the format of the transmit/receive data must coincide. For the PXR, the format of the communication data is determined by the MODBUS protocol. INZ-TN5A0506-E 1