Teledyne manual APPENDIX A-4 M102E Signal I/O Definitions, Revision A.2, Rev A.2

APPENDIX A-4: M102E Signal I/O Definitions, Revision A.2M102E/M501 TRS

(Addendum to M101E Manual - P/N 04740 Rev A)

APPENDIX A-4: M102E Signal I/O Definitions, Revision A.2

NOTE

Signal I/O Definitions for the M102E are the same as those for the M102E (see Appendix A-4 of the M101E Manual - P/N 04740110 Rev A) with the following exceptions:

Table A-7: Signal I/O Definitions Deleted from M102 Software Revision A.2

SIGNAL NAME	BIT OR CHANNEL		DESCRIPTION
	NUMBER
Control inputs, U11, J1004, pins 1–6 = bits 0–5, default I/O address 321 hex
EXT_LOW_SPAN	2	0	= go into low span calibration
		1	= exit low span calibration
Relay board digital output (PCF8575), default I2C address 44 hex
CONV_HEATER	2	0	= converter cell heater on
		1	= off
LOW_SPAN_VALVE	8	0	= let low span gas in
		1	= let sample gas in
ZERO_VALVE	9	0	= let zero gas in
		1	= let sample gas in
Rear board primary MUX analog inputs
VACUUM_PRESSURE	10	Vacuum pressure

A-8 05515 Rev A.2