25
Wiring the RS-422/RS-485 Devices
Section 2-3
2-3-5
Connection for E5ER/E5AR Compoway-F Communications
The E5ER / E5AR Temperature Controllers all use Compoway-F communica-
tions over 2-wire RS-485.
• The RS-485 connection can be either one-to-one or one-to-N. Up to 15
Temperature Controller units can be connected in a one-to-N system.
• The total cable length is 500 m max.
The figure below shows the connection between one PROFIBUS-DP Gate-
way Unit and 1 to 15 E5ER / E5AR Temperature Controller Units. Refer to the
E5ER / E5AR User Manuals for more information on Wiring.
E5ZN
(No.0,1,2)
E5ZN
(No.3,4,5)
(R+)
(R-)
24
23
(R+)
(R-)
24
23
E5ZN
(No.13,14,15)
(R+)
(R-)
24
23
Terminator 220
W(1/2 W)
Terminator
220
Ω
(1/2 W)
FG
R-
R+
RS-485
PRT1-SCU11
Shield
FG
R-
R+
RS-485
RS-485
R-
R+
1
2
220
ǡ
(1/2 W
㧕
1
2
Pin No.
Description
PRT1-SCU11
E5ER / E5AR side
Shield
Shield
Terminator
Use a 220
Ω
(1/2 W)
terminator.
E5ER E5AR
RS-485
R
−
R+
2
1
2
1
Pin No.
Description
E5ER / E5AR side
E5ER E5AR
End Node