Omron E5AN-H User Manual

38
Wiring Terminals Section 2-2
Communications RS-485
• When communications are to be used with the E53-CN@03N2 for the
E5CN-H, or E53-EN03 for the E5AN/EN-H, connect communications
cable across terminals 11 and 12 or 21 and 22.
Specify both ends of the transmission path including the host computer as
end nodes (that is, connect terminators to both ends).
The minimum terminal resistance is 54 Ω.
Communications Unit Connection Diagram
E5CN-H
E5AN/EN-H
• The RS-485 connection can be either one-to-one or one-to-N. A maxi-
mum of 32 Units (including the host computer) can be connected in one-
to-N systems. The maximum total cable length is 500 m. Use AWG24
(cross-sectional area: 0.205 mm
2
) to AWG14 (cross-sectional area:
2.081 mm
2
) shielded twisted-pair cable.
E53-CN@03N2 (for E5CN-H)
11
12
RS-485
A(−)
B(+)
E53-EN03 (for E5AN/EN-H)
RS-485
Do not use.
B(+)
B(+)
A(−)
A(−)
11
12
13
21
22
No.
12
11
A (−)
B (+)
A (−)
B (+)
RS-485
−
+
FG
No.
12
11
RS-485
E5CN-H (No. 1)
E5CN-H (No. 31)
RS-485
Host computer
Shield
Terminator (120 Ω, 1/2 W)
Abbreviation Abbreviation
A < B: [1] Mark
A > B: [0] Space
RS-485
RS-485
RS-485
Host computer
Shield
Terminator (120 Ω, 1/2 W)
Abbreviation
A < B: [1] Mark
A > B: [0] Space
−
+
FG
No.
22
21
No.
22
21
12
11
12
11
E5AN/EN-H (No. 31)
E5AN/EN-H (No. 1)
Abbreviation
A (−)
A (−)
A (−)
A (−)
B (+)
B (+)
B (+)
B (+)
Cross-sectional area of
conductor
AWG24: 0.205 mm
2
AWG14: 2.081 mm
2

Omron E5AN-H Specifications

General

Brand	Omron
Model	E5AN-H
Category	Temperature Controller
Language	English