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 k
Ω
.
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