Teledyne GFC-7000E - Trace CO2 Analyzer - Manual (Page 252)

Model 360E Instruction Manual APPENDIX A-4: MGFC7000E Signal I/O Definitions, Revision E.0
045840110 Rev B.3 241
SIGNAL NAME BIT OR CHANNEL
NUMBER
DESCRIPTION
ST_SPAN_CAL 4 0 = in span calibration
1 = not in span
ST_DIAG_MODE 5 0 = in diagnostic mode
1 = not in diagnostic mode
ST_CONC_ALARM_1
2
6 0 = conc. limit 1 exceeded
1 = conc. OK
ST_CONC_ALARM_2
2
7 0 = conc. limit 2 exceeded
1 = conc. OK
B status outputs, U27, J1018, pins 1–8 = bits 0–7, default I/
ST_AUTO_REF 2, 3 0 0 = in auto-reference mode
1 = not in auto-reference mode
1–7 Spare
Front panel I 2 C keyboard, default I 2 C address 4
MAINT_MODE 5 (input) 0 = maintenance mode
1 = normal mode
LANG2_SELECT 6 (input) 0 = select second language
1 = select first language (English)
SAMPLE_LED 8 (output) 0 = sample LED on
1 = off
CAL_LED 9 (output) 0 = cal. LED on
1 = off
FAULT_LED 10 (output) 0 = fault LED on
1 = off
AUDIBLE_BEEPER 14 (output) 0 = beeper on (for diagnostic testing only)
1 = off
Relay board digital output (PCF8574), default I 2 C add
RELAY_WATCHDOG 0 Alternate between 0 and 1 at least every 5 se
relay board active
WHEEL_HTR 1 0 = wheel heater on
1 = off
BENCH_HTR 2 0 = optical bench heater on
1 = off
O2_CELL_HEATER 5 3 0 = O
2
sensor cell heater on
1 = off
CAL_VALVE 4 0 = let cal. gas in
1 = let sample gas in
SPAN_VALVE 5 0 = let span gas in
1 = let zero gas in
ZERO_SCRUB_VALV
E 2
6 0 = open zero scrubber valve
1 = close
SHUTOFF_VALVE 6 0 = energize shutoff valve
1 = de-energize
IR_SOURCE_ON 7 0 = IR source on
1 = off
Rear board primary MUX analog inputs
SAMPLE_PRESSURE 0 Sample pressure
1 Vacuum pressure
1 Purge pressure