Inovance AC700 Series, Руководство пользователя

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Wiring
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Terminal wiring
The AC700 series controller provides three terminals (485+, 485－ and GND) for RS485
communication. Ensure that the RS485 bus contains three cables, and the terminals are connected
correctly. For the shielded cables, the shield must be connected to the GND terminal, rather than
any other location (including housings and equipment ground terminals).
Due to the attenuation effect of the cable, it is recommended that you use AGW26 or thicker cables
for a connection length longer than 3 m. It is always recommended that you connect the 485+ and
485－ terminals to twisted pair cables.
1. Recommended cable 1: Unshielded twisted pair cable with multiple conductors. Connect one
twisted pair to the 485+ and 485－ terminals, and twist other wires together and connect them to
the GND terminal.
2. Recommended cable 2: Shielded twisted pair cable. Connect the twisted pair cable to the 485+
and 485－ terminals, and connect the shield to the CGND terminal. The shield must only be
connected to the GND terminal, not to the field ground.
4.3.5 RS232 Bus Wiring Instructions
When you use an RS232 to RS485 converter, it is recommended that you use an external power supply
to power the converter. If the external power supply is unavailable, the baud rate should not exceed
9.6 kbps.
4.4 Wiring of Network Ports
4.4.1 Network Port Specifications
The AC700 series controller provides four Gigabit network ports, which are described as follows: