Teledyne 6400EH - Sulfur Dioxide Analyzer - Manual (Page 86)

Appendix A Model 6400EH
Teledyne Analytical Instruments 74
SIGNAL NAME BIT OR CHANNEL
NUMBER
DESCRIPTION
1 = all pressures OK
ST_TEMP_ALARM 4
0 = any temperature alarm
1 = all temperatures OK
ST_HVPS_ALARM 5
0 = HVPS alarm
1 = HVPS OK
6–7 Spare
Front panel I2C keyboard, default I2C address 4E hex
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
AUDIBLEBEEPER 14 (output)
0 = beeper on (for diagnostic testing
only)
1 = off
Relay board digital output (PCF8575), default I2C address 44 hex
RELAY_WATCHDOG 0
Alternate between 0 and 1 at least every
5 seconds to keep relay board active
RCE LL_HEATER 1
0 = reaction cell heater on
1 = off
2–3 Spare
IZSHEATER 4
0 = IZS heater on
1 = off
5 Spare
CAL VALVE 6
0 = let cal. gas in
1 = let sample gas in