2011 - TSP S.r.l.

ZCONV485 is an efficient and compact RS232 – RS485 self-powered converter.

It connects directly to the RS232 port using the classic 9-pin SUBD connector. From this it derives also the current necessary for its operation.

On the opposite side there are 6 terminals with a 5.08 mm pitch to which the RS485 communication cable is to be connected. It is also possible to supply the converter directly from the bus by applying a voltage between 9 and 24 Vdc.

Technical characteristics, RS232 side:

Data Rate up to 120 kpbs
ESD +/-15 kV (HBM – Human Body Model)
Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards
Max supply current 15 mA

Technical characteristics, RS485 side:

Maximum bumber of end node: 32
Low Supply Current, 5 mA Max
Meets or Exceeds the Standard Requirements of ANSI RS-485 and ISO 8482:1987(E)
Common-Mode Voltage Range of −7 V to 12 V
Positive- and Negative-Output Current Limiting
Driver Thermal Shutdown Protection

The following table shows the pinouts of the two connectors.

RS232	RS485	Function
	1	Power Supply 9 – 24 Vdc
2	2	RXD+ / A
	3	RXD- / B
	4	TXD- / Z
3	5	TXD+ / Y
5	6	Gnd
4, 7		Power Supply

More information? Please use the following form.

This electronic board is based on a microcontroller PIC18F4431 from Microchip and it acts like a small PLC.
With respect a standard PLC, this is a much more high performance/cost ratio solution.
Its microcontroller is able to control each input and ouput signal faster than a lod-end PLC, just in few microseconds.

The board is equipped with:

16 digital inpunt working at 24 Vdc;
8 digital PNP output – max ouput current 100 mA @ 24 Vdc;
each input and each ouput is equipped with a LED to easily see the corresponding state – active high;
1 analog input 0 – 10 Vdc;
1 input for an incremental encoder with A, B and INDX signals decoding;
1 RS232 serial port to communicate with and external device (terminal, PC, bar-code reader etc).

The dimension of the board are: 100 x 160 mm.

The green plastic enclosure is ready for the hooking on the DIN bar.

For more information, please use the following form.

April 17, 2011

ZCONV485

GPIO4431