Appendix 2 – mga modbus registers – Super Systems MGA6000 User Manual
Page 28
SSi Manual #4563 Rev. D Page 28 Multi-Gas Model 6000
Appendix 2 – MGA Modbus Registers
This appendix is meant to be used as a reference only. Please contact Super Systems Inc at 800-666-4330
before directly modifying any register’s values.
Register Number
Description
0
Release number (Displayed * 100)
1
RS485 Host port Baud (0 to 13 for 1200 to 921600)
2
RS485 Host/slave port; 0 = MMI master, 1 = Modbus master, 2 = Modbus slave (host
port)
3
RS485 Slave port Baud fixed 5 = 19.2k
4
RS485 Slave port; fixed 1 = modbus
5
RS232 H2 port 3 for 9600 baud 8N1
6
RS232 H2 port forced Hydrogen cell = 6
7
coms to PICs forced to 19200
8
coms to PICs forced to Modbus
9
RS232 Aux port Baud (0 to 13 for 1200 to 921600)
10
RS232 Aux port; forced Modbus = 1
11
Not used in the MGA
12
Number of bases (Out dated; forced to a value = 0)
13
Selected language (Future use; not used at this time)
14
Modbus address of the instrument
15
Temperature degrees (0 = degree F; 1 = degree C)
16
IR control 0 = manual, 1 = auto
17
IR control proportional band
18
IR control reset
19
IR control rate
20
Item to display 1st on main display
21
Item to display 2nd on main display
22
Item to display 3rd on main display
23
Item to display 4th on main display
* Registers 24 to 42 not used
43
Number of free sectors
44
Number times kill has been called
45
Elevation from sea level in feet (Blue Ash airport 856 ft./4250 Creek Rd 802 ft./7205
Edington 887 ft.)
46
pressure trim value
47
Local pressure entered for calibration
48
O2 calibration factor (2489 = .2489)
49
O2 zero offset
50 to 53
Pressure reading at last calibration in kPa * 100
54
Adjust minimum temperature
55
Adjust minimum millivolts
56
Minimum MV action; 0 = only inhibits adjust and control, 1 = also stops pump.
57
max adjust amount
58
maximum COF/PF
59
minimum COF/PF
60
mode: 0 = monitor, 1 = COF/PF adjust base on %C, 2 = COF/PF adjust based on CO
61
RS232 Host port baud
62
RS232 Host port mode: Modbus
63
IR control setpoint
* flow calibration
64 flow
zero
offset