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1 to n Connection in 4-wire Type
ALR121
TX+
TX-
RX+
RX-
SG
FG
TX+
TX-
RX+
RX-
SG
FG
TX+
TX-
RX+
RX-
SG
R1
TX+
TX-
RX+
RX-
SG
FG
R2
R2
External device
R1: Termination resistance of 120 ohm
R2: According to the instruction on the subsystem side
Figure 5.5.2-8 1 to n Connection in 4-wire Type
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1 to n Connection in 2-wire Type
When ALR121 is specified for 2-wire connection by the builder, “TX+ and RX+”, “TX- and RX-”
are automatically connected within the module.
ALR121
TX+
TX-
RX+
RX-
SG
FG
TX+
TX-
RX+
RX-
SG
FG
TX+
TX-
RX+
RX-
SG
R1
TX+
TX-
RX+
RX-
SG
FG
R2
External device
R1: Termination resistance of 120 ohm
R2: According to the instruction on the subsystem side
Figure 5.5.2-9 1 to n Connection in 2-wire Type
<5.5 Connection of Communication Modules >
5-45
IM 32Q06C10-31E
4th Edition : Jan.30,2015-00