Toshiba Tosvert RS485 Instruction Manual page 73

Connector diagram for 4-wire RS485 communication
Connecting diagram for 4-wire RS485 communication
CN1
Pin-4
Pin-5
Pin-3
Pin-6
Pin-8
(Pin-2)
* When using 2-wire type, short RXB to TXB and RXA to TXA.
* Never use pin-1 (Open) and pin-7 (P11).
Pin-8
Signal name Pin number
RXA 4
RXB 5
TXA 3
TXB 6
SG 8
(2)
− 1
P11 7
*This table shows signal line of inverter side. (Example: RXA signal is received by
inverter.)
Cross
Master
RXA
RXB
TXA
TXB
SG
Pin-1
Description
Same phase reception data (positive line)
Anti-phase reception data (negative line)
Same phase transmitting data (positive line)
Anti-phase transmitting data (negative line)
Ground line of signal data
Open (Do not connect the cable.)
11V (Do not connect the cable.)
Straight
Slave Slave
RXA RXA
RXB RXB
TXA TXA
TXB TXB
SG SG
72
E
E6581315
Straight
Slave
RXA
RXB
TXA
TXB
SG
Terminating resistance
120Ω-1/2W