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Teledyne API - Models T703, T703U, 703E MENU TREES (05745E DCN6572) APPENDIX A-4: Signal I/O Definitions
A-21
APPENDIX A-4: Signal I/O Definitions
Table A-4: Signal I/O Definitions
MODELS T703, T703U, 703E I/O Signal List for Latest Revision
Signal Name
Bit or
Channel
Number
Description
U11, J1004, control inputs, pins 1-6 = bits 0-5, read, default I/O address 321 hex
CONTROL_IN_1 –
CONTROL_IN_6
0–5 0 = input asserted
1 = de-asserted
6–7 Always 1
U14, J1006, control inputs, pins 1-6 = bits 0-5, read, default I/O address 325 hex
CONTROL_IN_7 –
CONTROL_IN_12
0–5 0 = input asserted
1 = de-asserted
6–7 Always 1
U17, J1008, control outputs, pins 1-8 = bits 0-7, write, default I/O address 321 hex
CONTROL_OUT_1 –
CONTROL_OUT_8
0–7 0 = output asserted
1 = de-asserted
U21, J1008, control outputs, pins 9-12 = bits 0-3, write, default I/O address 325 hex
CONTROL_OUT_9 –
CONTROL_OUT_12
0–3 0 = output asserted
1 = de-asserted
U7, J108, internal inputs, pins 9-16 = bits 0-7, read, default I/O address 322 hex
0–7 Spare
U8, J108, internal outputs, pins 1-8 = bits 0-7, write, default I/O address 322 hex
0–7 Spare
U24, J1017, A status outputs, pins 1-8 = bits 0-7, write, default I/O address 323 hex
ST_SYSTEM_OK
0 0 = system OK
1 = any alarm condition or in diagnostics mode
1 Spare
ST_CAL_ACTIVE
2 0 = executing sequence
1 = not executing sequence
ST_DIAG_MODE
3
0 = in diagnostic mode
1 = not in diagnostic mode
ST_TEMP_ALARM
4 0 = any temperature alarm
1 = all temperatures OK
ST_PRESS_ALARM
5 0 = any pressure alarm
1 = all pressures OK
6-7 Spare
U27, J1018, B status outputs, pins 1-8 = bits 0-7, write, default I/O address 324 hex
0-7 Spare
Relay board digital output (PCF8575), write, 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
ZERO_AIR_PUMP
1 0 = pump on for zero air
1 = off
2–5 Spare
07223C DCN6572