Node With Network Bias Resistors - Mitsubishi Electric FR-F800 Instruction Manual

Communication specifications
• The specifications conform to the BACnet standard of physical medium EIA-485.
Item
Physical medium
Connection port
Data transfer method
Baud rate
Start bit
Data length
Parity bit
Stop bit
Network topology
Communication method
Communication protocol
Maximum connection
Node number
Master
Supported property of BACnet
standard object type
Supported BIBBs (Annex K)
BACnet standard device profile (Annex
L)
Segmentation
Device address binding
NOTE
• This product conforms to BACnet Application Specific Controller (B-ASC).
• This product is designed for multiple master network, therefore 2-wire type connection is supported.
Node with network bias resistors
• This product is a node with local bias resistors. Therefore at least one node must be a node with network bias resistors in
the network configuration.
• When configuring the network with only this products, refer to the following, and make the node with network bias resistors.
(When using two sets in one segment, insert them into both ends of the network.)
Other
node
(N) Operation via communication and its settings
EIA-485 (RS-485)
RS-485 terminals (PU connector is not available.)
NRZ encoding
9600 bps, 19200 bps, 38400 bps, 57600 bps, 76800 bps, 115200 bps
Fixed to 1 bit
Fixed to 8 bits
Fixed to none
Fixed to 1 bit
Bus topology
Token passing (token bus)
Master-slave (Only the master is available for this product.)
MS/TP (master-slave/token passing LAN)
255 (up to 32 for one segment, addition with a repeater available)
0 to 127
0 to 127 (This product is the master.)
Refer to page 483.
Refer to page 491.
Refer to page 491.
Not supported
Not supported
P5S SG SDA1 SDB1 RDA1
(VCC) (GND) (TXD1+) (TXD1-) (RXD1+)
VCC GND + TXD - +
VCC GND + TXD - +
P5S SG SDA2 SDB2 RDA2
(VCC) (GND) (TXD2+) (TXD2-) (RXD2+)
Description
RDB1
(RXD1-)
RXD -
RXD -
RDB2
(RXD2-)
Ω
Connect two 510 (1/4W) resistors.
481
PARAMETERS
5
GROUP
N