Model 100E Instruction Manual APPENDIX A-4: M100E Signal I/O Definitions,
Revision B.3
045150110 Rev B.3 243
SIGNAL NAME BIT OR CHANNEL
NUMBER
DESCRIPTION
ST_ZERO_CAL 3 0 = in zero calibration
1 = not in zero
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_LOW_SPAN_CAL
2,3,6,7
6 0 = in low span calibration
1 = not in low span
7 Spare
B status outputs, U27, J1018, pins 1–8 = bits 0–7, default I/O address 324 hex
ST_LAMP_ALARM 0 0 = lamp intensity low
1 = lamp intensity OK
ST_DARK_CAL_ALARM 1 0 = dark cal. warning
1 = dark cal. OK
ST_FLOW_ALARM 2 0 = any flow alarm
1 = all flows OK
ST_PRESS_ALARM 3 0 = any pressure alarm
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 I
2
C keyboard, default I
2
C 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
AUDIBLE_BEEPER 14 (output) 0 = beeper on (for diagnostic testing only)
1 = off
Relay board digital output (PCF8575), 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
RCELL_HEATER 1 0 = sample chamber heater on
1 = off
2 Spare
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