USER MANUAL - SIP POWER ION PUMP CONTROLLER
M.HIST.0109.23 Rev.1 Page 29 of 62
Voltage is referenced to GND pin; minimal load resistance is 100 kΩ.
8.3. RS485 Interface
For communication, the RS485 standard serial interface is used on two-wire. Communication
channels are galvanically separated from the frame of the supply.
Default communication baud rate for RS485 is 38400, 8 data bits, 2 stop-bit, without parity bit, flow
control none.
Default Modbus slave address is 11 (broadcast is 255).
Control of the supply by means of serial interfaces is described in following chapters.
0
2
4
6
8
10
1E-9 1E-8 1E-7 1E-6 1E-5 1E-4 1E-3 1E-2 1E-1
U [V]
I [A]
Analog Output voltage versus IP current
Pin Meaning
5 GND ground connection
4 RS485 – negative com. line
3 RS485 + positive com. line