Table of Contents
Advertisement
Model 400E Instruction Manual
SIGNAL NAME
B status outputs, U27, J1018, pins 1–8 = bits 0–7, default I/O address 324 hex
ST_DIAG_MODE
ST_LOW_SPAN_CAL
ST_LAMP_ALARM
MAINT_MODE
LANG2_SELECT
SAMPLE_LED
CAL_LED
FAULT_LED
AUDIBLE_BEEPER
Relay board digital output (PCF8575), default I
RELAY_WATCHDOG
O3_SCRUB_HEATER
SPAN_VALVE
PHOTO_REF_VALVE
CAL_VALVE
PHOTO_LAMP_HEATER
O3_GEN_HEATER
PHOTO_DET
O3_GEN_REF_DET
SAMPLE_PRESSURE
SAMPLE_FLOW
TEST_INPUT_7
TEST_INPUT_8
04402 Rev C.3
APPENDIX A-4: M400E Signal I/O Definitions, Revision .2
BIT OR
CHANNEL
NUMBER
0
1
2
3–7
2
Front panel I
C keyboard, default I
5 (input)
6 (input)
8 (output)
9 (output)
10 (output)
14 (output)
0
1
2–5
6
7
8
9–13
14
15
Rear board primary MUX analog inputs
0
1
2
3
4
5
6
7
8
DESCRIPTION
0 = in diagnostic mode
1 = not in diagnostic mode
0 = in low span calibration
1 = not in low span
0 = any lamp alarm
1 = all lamps OK
Spare
2
C address 4E hex
0 = maintenance mode
1 = normal mode
0 = select second language
1 = select first language (English)
0 = sample LED on
1 = off
0 = cal. LED on
1 = off
0 = fault LED on
1 = off
0 = beeper on (for diagnostic testing only)
1 = off
2
C address 44 hex
Alternate between 0 and 1 at least every 5 seconds to
keep relay board active
0 = O
scrubber heater on
3
1 = off
Spare
0 = let span gas in
1 = let zero gas in
0 = photometer valve in reference position
1 = measure position
0 = let cal. gas in
1 = let sample gas in
Spare
0 = O
photometer lamp heater on
3
1 = off
0 = O
generator lamp heater on
3
1 = off
Photometer detector reading
O
generator reference detector reading
3
Spare
Sample pressure
Temperature MUX
Spare
Sample flow
Diagnostic test input
Diagnostic test input
17
Advertisement
Table of Contents
