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Model 200EH/EM (Ref: 05147F) APPENDIX A-4: M200EH/EM Signal I/O Definitions, Revision F.0
A-19
APPENDIX A-4: M200EH/EM Signal I/O Definitions, Revision F.0
Table A-4: M200EH/EM Signal I/O Definitions, Revision F.0
SIGNAL NAME
BIT OR CHANNEL
NUMBER
DESCRIPTION
Internal inputs, U7, J108, pins 9–16 = bits 0–7, default I/O address 322 hex
0–7 Spare
Internal outputs, U8, J108, pins 1–8 = bits 0–7, default I/O address 322 hex
ELEC_TEST 0 1 = electrical test on
0 = off
OPTIC_TEST 1 1 = optic test on
0 = off
PREAMP_RANGE_HI 2 1 = select high preamp range
0 = select low range
O3GEN_STATUS 3 0 = ozone generator on
1 = off
4–5 Spare
I2C_RESET 6 1 = reset I
2
C peripherals
0 = normal
I2C_DRV_RST 7 0 = hardware reset 8584 chip
1 = normal
Control inputs, U11, J1004, pins 1–6 = bits 0–5, default I/O address 321 hex
EXT_ZERO_CAL 0 0 = go into zero calibration
1 = exit zero calibration
EXT_SPAN_CAL 1 0 = go into span calibration
1 = exit span calibration
EXT_LOW_SPAN 2 0 = go into low span calibration
1 = exit low span calibration
REMOTE_RANGE_HI 3 0 = remote select high range
1 = default range
4–5 Spare
6–7 Always 1
Control inputs, U14, J1006, pins 1–6 = bits 0–5, default I/O address 325 hex
0–5 Spare
6–7 Always 1
Control outputs, U17, J1008, pins 1–8 = bits 0–7, default I/O address 321 hex
0–7 Spare
Control outputs, U21, J1008, pins 9–12 = bits 0–3, default I/O address 325 hex
0–3 Spare
Alarm outputs, U21, J1009, pins 1–12 = bits 4–7, default I/O address 325 hex
ST_SYSTEM_OK2
2
4 1 = system OK
0 = any alarm condition or in diagnostics mode
ST_CONC_ALARM_1 5 1 = conc. limit 1 exceeded
0 = conc. OK
ST_CONC_ALARM_2 6 1 = conc. limit 2 exceeded
0 = conc. OK
04521C (DCN5731)