Wiring; Remote I/O Cable Wiring; Figure 3-3 Remote I/O Cable Wiring - Hitachi LQZ700 User Manual

3 MOUNTING AND WIRING

3.4 Wiring

3.4.1 Remote I/O Cable Wiring

The SYS SW module is a system changeover system for simplified duplexing of the LPU unit.
The remote I/O unit cannot be duplexed. The remote I/O unit is shared. Regarding the remote
I/O line, therefore, connect between each LPU unit and the remote I/O station by a remote I/O cable.
At this time, be sure to provide a terminating resistor in the units at both ends of the remote I/O line.
The connected remote I/O stations must all be used with an output hold setting of "HOLD".
System A unit
PS LPU
PS
(RI/O)
PS
(RI/O)
Termination setting
Option
ST
I/O
"HOLD" setting
ST
I/O

Figure 3-3 Remote I/O Cable Wiring

System B unit
PS LPU
Termination setting
3-6
Option