Omron E5AZ User Manual page 39

Wiring Terminals
RS-232C
Communications
RS-485
Communications
20
• The output current is approx. 7 mA.
Contact input ON: 1 kΩ max., OFF: 100 kΩ min.
No-contact input ON: residual voltage 1.5 V max., OFF: leakage current 0.1 mA max.
Polarities during no-contact input are as follows:
• When the E53-AZ01 option communications unit is mounted in the E5AZ/
E5EZ for communicating with a host computer, connect the communica-
tions cable across terminals 12, 13, and 14.
Communications Unit Wiring Diagram
Host computer
RS-232C: 25 Pin
SD(TXD) 2
RD(RXD) 3
RS(RTS)
4
CS(CTS) 5
DR(DSR) 6
SG 7
ER(DTR) 20
FG 1
• The RS-232C connection is 1:1.
• The maximum cable length is 15 m. Use the RS-232C optical interface
cable (Z3RN) as an extension cable if necessary.
• Use AWG24 (cross-sectional area: 0.205 mm
tional area: 2.081 mm
• When the E53-AZ03 option communications unit is mounted in the E5AZ/
E5EZ for communicating with a host computer, connect the communica-
tions cable across terminals 12 and 13.
Specify both ends of the transmission path including the host computer as
the end node (that is, connect terminators to both ends).
The maximum terminal resistance is 54 Ω .
12
EV1
13
EV2
14
SD
12
RD
13
RS-232C
SG
14
RS-232C
No.
SD
12
RD
13
14 SG
2
) shielded twisted-pair cable.
12 B(+)
RS-485
13
A(−)
Section 2-2
2
) to AWG14 (cross-sec-