IAI America XSEL-KX - Manual (Page 305)

289
Appendix
[2] RS422 wiring
Control
circuit
SIO expansion board
Supplied joint cable
CB-ST-422J010
Provided by the user
RD + 11 RD + SD +
RD - 12 RD - SD -
TRM 13
SD + 15 SD + RD +
SD - 14 SD - RD -
120
Ω
Slave Master
1-to-N multi-drop
Terminal
block
Connect (13) TRM with
RD+ only at the
termination point.
RD + SD +
RD -
SD -
SD +
RD +
SD -
RD -
Slave Slave
RD + RD +
RD - RD -
SD + SD +
SD - SD -
Termination