Omron E5*C Series User Manual page 110

2 Preparations
E5DC-B
RS-485
host computer
100 Ω
FG
A < B: "1" Mark
A > B: "0" Space
E5GC
RS-485
host computer
−
+
100 Ω
FG
A < B: "1" Mark
A > B: "0" Space
• The RS-485 connection can be either one-to-one or one-to-N. A maximum of 32 Units (including
the host computer) can be connected in one-to-N systems.
The maximum total cable length is 500 m. Use shielded twisted-pair cable.
Note: The E5CC-U does not support communications.
 Connecting Short Bars
On the E5DC, you can use a Y92S-P11 Short Bar to connect the power supply or communications.
Connect the Short Bar to the power supply screw terminals or the screw terminals for communications.
• Short Bar (sold separately)
Y92S-P11
2 - 72
−
E5DC-B(No.1)
+
RS-485
No. Abbreviation
6 A(
5 B(+)
Shield
E5GC(No.1)
RS-485
No. Abbreviation
8 A(
7 B(+)
Cross-sectional area of conductor
(For details, refer to 2-2-9 Precautions when Wiring.)
Internal connection with
linking connector
E5DC-B(No.31)
RS-485
RS-485
No. Abbreviation
−
)
6 A(
5 B(+)
Terminator (120 Ω, 1/2 W)
E5GC(No.31)
RS-485
No. Abbreviation
−
8
)
7
Terminator (120 Ω, 1/2 W)
E5@C Digital Temperature Controllers User's Manual (H174)
−
)
−
A( )
B(+)