Vision OPLC V290, Руководство по установке

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Installation Guide
Unitronics 5
Power Supply
The controller requires an external 24VDC power supply. The permissible input voltage range is
20.4-28.8VDC, with less than 10% ripple.
A non-isolated power supply can be used if a 0V signal is connected to the chassis.
You must use an external circuit protection device.
Install an external circuit breaker. Guard against
short-circuiting in external wiring.
Double-check all wiring before turning on the power
supply.
Do not connect either the ‘Neutral or ‘Line’ signal of
the 110/220VAC to device’s 0V pin.
In the event of voltage fluctuations or non-conformity
to voltage power supply specifications, connect the
device to a regulated power supply.
To avoid electromagnetic interference, earth the
power supply as described on page 3.
Communication Ports
This series comprises 2 RS232/RS485 serial ports and a CANbus port.
Turn off power before making communications connections.
Caution
Signals are related to the controller’s 0V; the same 0V is used by the power supply.
Always use the appropriate port adapters.
Serial Communications
The serial ports are type RJ-11 and may be set to either RS232 or RS485 via DIP switches, in
accordance with to the table shown on page 7.
Use RS232 to download programs from a PC, and to communicate with serial devices and
applications, such as SCADA.
Use RS485 to create a multi-drop network containing up to 32 devices.
Caution The serial ports are isolated. If the controller is used with a non-isolated external device,
avoid potential voltage that exceeds ± 10V.
Pinouts
The pinouts below show the signals between the adapter and port.
RS232 RS485** Controller Port
Pin # Description Pin # Description
1* DTR signal 1 A signal (+)
2 0V reference 2 (RS232 signal)
3 TXD signal 3 (RS232 signal)
4 RXD signal 4 (RS232 signal)
5 0V reference 5 (RS232 signal)
6* DSR signal 6 B signal (-)
Pin #1
*Standard programming cables do not provide connection points for pins 1 and 6.
**When a port is adapted to RS485, Pin 1 (DTR) is used for signal A,
and Pin 6 (DSR) signal is used for signal B.