Filter
Top Products
APPENDIX A-3: Warnings and Test Functions, Revision D.3 (05623D DCN5839) T700, M700E Calibrator Manuals
A-26
Signal Name Bit or Channel
Number
Description
Relay board digital output (PCF8575), write, default I
2
C address 44 hex
RELAY_WATCHDOG 0
Alternate between 0 and 1 at least every 5 seconds to keep
relay board active
VENT_VALVE 1 0 = vent valve open
1 = close
PERM_HTR_2
2
2 0 = permeation tube #2 heater on
1 = off
3–4 Spare
GPT_VALVE 5 0 = open GPT bypass valve
1 = close
PHOTO_REF_VALVE 6
0 = photometer valve in reference position
1 = measure position
O3_GEN_VALVE 7 0 = open O
3
generator valve
1 = close
O3_PUMP_ON 8 0 = pump on for photometer to measure O
3
1 = off
O3_DIVERT_VALVE 9 0 = open O3 divert valve
1 = close
OUTPUT_VALVE_B
1
10 0 = open output shut-off valve B
1 = close
PERM_VALVE_1 11 0 = open permeation tube #1 valve
1 = close
PERM_VALVE_2
2
12 0 = open permeation tube #2 valve
1 = close
PERM_HTR_1 13 0 = permeation tube #1 heater on
1 = off
PHOTO_LAMP_HEATER 14 0 = O
3
photometer lamp heater on
1 = off
O3_GEN_HEATER 15 0 = O
3
generator lamp heater on
1 = off
Valve board digital output (PCA9557), write, default I
2
C address 3A hex
VALVE_WATCHDOG 0
Alternate between 0 and 1 at least every 5 seconds to keep
valve board active
CYL_VALVE_1 1 1 = open cylinder gas valve 1
0 = close
CYL_VALVE_2 2 1 = open cylinder gas valve 2
0 = close
CYL_VALVE_3 3 1 = open cylinder gas valve 3
0 = close
CYL_VALVE_4 4 1 = open cylinder gas valve 4
0 = close
06873B DCN6388