Communication Ports; Serial Communications - Klinkmann Unitronics Vision V530-53-B20B Installation Manual

Communication Ports

Turn off power before changing communication settings or connections.
Signals are related to the controller's 0V; the same 0V is used by the power supply.
Always use the appropriate port adapters.
Caution
The serial ports are not isolated. If the controller is used with a non-isolated external
device, avoid potential voltage that exceeds ± 10V.

Serial Communications

This series comprises 2 RJ-11-type serial ports and a CANbus port.
COM 1 is RS232 only. COM 2 may be set to either RS232 or RS485 via jumper as described on
page 7. By default, the port is set to RS232.
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.
Pinouts
The pinouts below show the signals sent from the controller to the PC.
To connect a PC to a port that is set to RS485, remove the RS485 connector, and connect the PC
to the PLC via the programming cable. Note that this is possible only if flow control signals are not
used (which is the standard case).
RS232
Pin # Description
1* DTR signal
2 0V reference
3 TXD signal
4 RXD signal
5 0V reference
6* DSR signal
*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.
6
RS485**
Pin # Description
1 A signal (+)
2 (RS232 signal)
3 (RS232 signal)
4 (RS232 signal)
5 (RS232 signal)
6 B signal (-)
Vision™ OPLC™ V530-53-B20B
Controller Port
Pin #1
Unitronics