Super Systems PGA3500 - Manual (Page 21)

SSi Manual 4559 Page 21 of 26 3-Gas Analyzer PGA3500
Revision Level - D
outside to be sure that the process gas does not influence the ambient air. After the pump
has been on for long enough for the readings to stabilize (approximately one minute), press
the Enter key to begin the calibration process. A calibration complete message will appear
when the calibration is finished.
Communications Setup – Menu Page 20
The menu page will allow the user to
set up the communications settings for
the PGA.
The Port Usage determines how the
PGA will communicate. The options are
either RS485 Host Port or Modbus.
These can be changed either by
pressing the circular arrow key to cycle
through the options, or by entering a
number which corresponds to the
option’s position in the list, where
RS485 Host Port is at position 0, and
Modbus is at position 1.
The Port Baud Rate determines how fast the PGA will communicate. The options with the
position number are:
Position Rate
Position Rate
0 1200 9 76800
1 2400 10 115200
2 4800 11 230400
3 9600 12 460800
4 14400 13 921600
5 19200
6 28800
7 38400
8 57600
To change the baud rate, press the circular arrow key until the desired option is reached, or
enter in the position number from the list above and press Enter to select the desired option.
The ATM Inst Type is the make and model of the instrument that will be supplying the PGA
with information on: probe temperature, probe millivolts, and COF/PF. The options with the
position number are:
Position
Type Description
0 SSI AC20 Super Systems AC20
1 Yoko 750 Yokogawa 750
2 UDC 3300 Honeywell UDC 3300
3 DP 1 Mod Marathon Sensors DualPro – Modbus Protocol Loop 1
4 DP 2 Mod Marathon Sensors DualPro – Modbus Protocol Loop 2
5 9200 lp Super Systems Model 9200 Loop 1
To change the instrument type, press the circular arrow key to cycle through the options, or
press the option’s position number and press Enter.
The ATM Inst Addr is the address of the ATM Inst. To change the address, enter the new
value and press Enter. The values can range from 0 to 250.