24
Wiring the RS-422/RS-485 Devices
Section 2-3
2-3-3
Connection for E5_N Compoway-F Communications
The E5AN / E5CN / E5EN / E5GN Temperature Controllers all use Compo-
way-F communications over 2-wire RS-485.
• The RS-485 connection can be either one-to-one or one-to-N. Up to 15
E5_N units can be connected in a one-to-N system.
• The total cable length is 500 m max.
• Use a shielded twisted-pair cable with wires of a thickness of AWG24
(0.205 mm
2
) to AWG14 (2.081 mm
2
)
The figure below shows the connection between one PROFIBUS-DP Gate-
way Unit and 1 to 15 E5_N Temperature Controller units. Refer to the E5AN /
E5CN / E5EN and E5GN User Manuals for more information on Wiring.
This way of communication is the one to use for other stand-alone Compo-
way-F instruments, an example of these kind of instruments is a K3GN Digital
Panel Meter.
2-3-4
Connection for E5ZN Compoway-F Communications
The E5ZN Temperature Controllers use Compoway-F communications over
2-wire RS-485. Multiple E5ZN units can be connected together, using one
RS-485 Terminal. The RS-485 connection is extended through the E5ZN
sockets. However, these units all have unique RS-485 addresses.
The RS-485 connection can be either one-to-one or one-to-N. Up to 15 E5ZN
units can be connected in a one-to-N system.
The figure below shows the connection between one PROFIBUS-DP Gate-
way Unit and 1 to 15 E5ZN Temperature Controller units. Refer to the E5ZN
User Manuals for more information on Wiring.
FG
R-
R+
RS-485
RS-485
S- / R
−
S+ / R+
12
11
220
ǡ
(1/2 W
㧕
6
5
Pin No.
Description
PRT1-SCU11
E5_N side
Shield
Shield
Terminator
Use a 220
Ω
(1/2 W)
terminator.
AN/EN/CN GN
RS-485
S- / R
−
S+ / R+
12
11
6
5
Pin No.
Description
E5_N side
AN/EN/CN GN
End Node