Super Systems 9210 Series User Manual
Page 61

M4557 - Model 9210 Nitriding Controller
SSi Manual SERIES 9210-M4557-Nitriding
Page 61 of 61
Quantity: is one of H2 CO CO2
xxxx: is the measured quantity. The resolution is the same as the display:
Unit: is one of % percent r compensation ratio
The compensation ratio is the diagnostic data for instruments with a secondary gas background. When
requested as a data it will return the present ratio for compensating the primary measured gas “R1”
I.e. for H2 in N2 with a secondary gas of CO2
D1 CO2=0.069r If you know the concentration of the CO2 can calculate the correction in the H2 reading as
H2- ( CO2 * 0.069)
In over-range condition (when the display shows ‘HI’) xxxxx will be ‘+++++’ In under-range condition
(when the display shows ‘LO’) xxxxx will be ‘-----’
Controller.
Sensor
Reading
R1 H2= 98.5%
Instrument request a
reading
Span=99.0
S1 Pass
Controller requests a span
setting of 99.0%
Reading
R1 H2= 99.0%
I.e. this would set the present instrument reading to 99.0% The unit “%” is assumed to be the same as the
reading.
Error messages
Error messages take the form ‘? xx’ where ‘xx’ is a numeric code as explained below Comms. Errors:
Code
Error
Description
90
Buffer overflow
More than 15 characters were received without message terminator
(
91
Message timeout
10 seconds has elapsed since the last character was received
without message terminator.
92
Bad opcode
Message was received correctly terminated but not understood (e.g.
‘Fred=1
93
Bad operand
Message was received correctly terminated and understood but the
line number wasn’t (e.g. ‘Reading=Q