IAI America XSEL-KE - Manual (Page 331)

316
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 :
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