Mitsubishi MELFA RH-6SH Series Standard Specifications Manual page 142

3Controller
RIO1 connector
Controller back side
Connect the NET cable-1 to the RIO1 connector on the back of the controller. Each unit is
connected to from a daisy chain.
Always install a terminator (R-TM) to the last unit.
Note) Use a shield cable for NET cable-1 as a measure against noise.
Always connect the shield to FG.
The unit could malfunction because of noise if the shield cable is not used.
Fig.3-39 ： Connection method of expansion parallel input/output unit (CR1B-571 controller)
Options
3-130
Parallel I/O unit 1 . . . 6
Station No. setting
1 . . . 6
Note)
NETcable-1
cable
＜CN100＞
RIO1 connector
DCIN
connector
FG
DCcable-2
cable
I/O unit the bottom
Connecta layout
Station No. setting
7
＜CN300＞
＜CN100＞
RIO2 connector
RIO1 connector
Note)
NETcable-1
cable
Front
RIO1 connector
RIO2 connector
DCIN connector
Parallel I/O unit 7
RIO2 connector
DCIN
connector
R-TM
terminator
FG
DCcable-2
cable
＜CN300＞