Mitsubishi Electric FR-F800, Instruction Manual

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(N) Operation via communication and its settings Parameters
5 - 496
Communication specifications
The specifications conform to the BACnet standard of physical medium EIA-485.
Item Description
Physical medium EIA-485 (RS-485)
Connection port RS-485 terminal (PU connector is not available)
Data transfer method NRZ encoding
Baud rate 9600 bps, 19200 bps, 38400 bps, 57600 bps, 76800 bps, 115200 bps
Start bit Fixed to 1bit
Data length Fixed to 8bits
Parity bit Fixed to none
Stop bit Fixed to 1bit
Network topology Bus topology
Communication method
Token passing (token bus)
Master-slave (only the master is available for this product)
Communication protocol MS/TP (master-slave/token passing LAN)
Maximum connection 255 (up to 32 for one segment, addition with a repeater is available)
Node number 0 to 127
Master 0 to 127 (this product is the master)
Supported property of BACnet standard object
type
Refer to page 5-499
Supported BIBBs (Annex K) Refer to page 5-509
BACnet standard device profile (Annex L) Refer to page 5-509
Segmentation Not supported
Device address binding Not supported
Tab. 5-260: BACnet communication specifications
NOTES This product conforms to BACnet Application Specific Controller (B-ASC).
This product is designed for multiple master network, therefore 2-wire type connection is sup-
ported.