15
Table 1 - Common groups (continued)
Send Function Reply (verbose) Reply (terse) Limits (where applicable) Notes
AxPy Parameters.
P9 Terse=0 P9=1 0 or 1 1 to set instrument into terse
mode – 0 to set verbose
P8 A2 Mode=1 P8 =1 0 to 3 0, 1, 2, 3 in terse - Off, High,
Low, status in verbose
P7 A2 Hyst=1.0% P7 =1.0 1 to 10 (1dp) Alarm hysteresis
P6 A2 Level=5.0% P6 =5.0 0 to 100 Alarm trip point
P5 A1 Mode=1 P5 =1 As alarm 2 As alarm 2
P4 A1 Hyst=1.0% P4 =1.0 As alarm 2 As alarm 2
P3 A1 Level=5.0% P3 =5.0 As alarm 2 As alarm 2
P2 4mA=0% P2 =0 Will show 0V or 4mA
depending on variant.
P1 20mA=50% P1 =50 0 to 100 Zero and FSD limits are
interactive.
AxRy Reading
* see (8) below
R5 Comp2=N/A R5 =0
R4 Temp=Normal R4 =1 Heater state – see also heater
errors.
R3 Alarm2=Normal R3 =0 0 to 2 Alarm state – Off, Normal,
ALARM or N/A (if not fitted)
R2 Alarm1=Normal R2 =0 0 to 2 In terse mode alarm state is
1 in alarm and 0 for all other
states
R1 Conc=5.00% R1 =5.00 Instrument range and resolution Measure and Concentration
Notes on readings:- In over-range condition (110% of instrument span) xxxxx will be ‘+++++’ (e.g. ‘R1 Conc= +++++’). Similarly in under-range
condition (-5% of instrument span) xxxxx will be ‘-----’. In the case of a system error R1 will be replaced by the error code e.g. ? 72 In verbose
mode a brief fault description will be appended. ‘Conc’ & ‘%’ are determined by sensor type and unit – see ‘U’ below. Resolution is applica-
tion dependant. Where a fault is present in the secondary reading it will be indicated by a text description in verbose mode and by a code in
the case of Zr units (heater does not return a numeric value in R4) or by -999 or +999 to indicate downscale or upscale failures respectively.
AxUy Unit
(read only)
U13 Test Flags=0 U13=0
U12 Factory Flags=0 U12=0
U11 Output=mA* U11=1 Analogue output: 0=4/20mA,
1= 0/1V, 2 = 0/5V, 3=0/20mA
U10 Sens 2 Ch=1 U10=1 Sens 2 ADC chan (9)
U9 R2 unit=mV U9=2
U8 R2 type=T/C U8 =14
U7 R1 Ch=1 U7 =1
U6 R1 unit=% U6 =1
U5 R1 type=Z U5 =13
U4 F/w rev=0.24 U4 =0.24
U3 F/w p/n=290-6031 U3 =290-6031
U2 S/n = I-700123 U2=I-700123
U1 Addr=0 U1 =0 Sensor Card Address
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