Connecting The Status Outputs; Table 3-5: Status Output Pin-Outs - Teledyne T360 Operation Manual

Getting Started

3.5.4. Connecting the Status Outputs

Most PLC's have internal provisions for limiting the current the input will draw. When connecting
to a unit that does not have this feature, external resistors must be used to limit the current
through the individual transistor outputs to ≤50mA (120 Ω for 5V supply).
STATUS
OUTPUT #
DEFINITION
1 SYSTEM OK
2
CONC VALID
3 HIGH RANGE
4 ZERO CAL
SPAN CAL
5
6 DIAG MODE
7 ALARM1
8 ALARM2
D EMITTER BUS
+ DC POWER
Digital Ground
38
If you wish utilize the analyzer's status outputs to interface with a device that
accepts logic-level digital inputs, such as programmable logic controllers (PLC's)
they are accessed via a 12-pin connector on the analyzer's rear panel labeled
STATUS.
1 2 3 4 5
The pin assignments for the status outputs can be found in the table below:

Table 3-5: Status Output Pin-outs

On if no faults are present.
On if CO concentration measurement is valid.
2
If the CO concentration measurement is invalid, this bit is OFF.
2
On if unit is in high range of DUAL or AUTO range modes.
On whenever the instruments ZERO point is being calibrated.
On whenever the instruments SPAN point is being calibrated.
On whenever the instrument is in DIAGNOSTIC mode.
On whenever the measured CO
ALM1
On whenever the measured CO
ALM2
The emitters of the transistors on pins 1-8 are bused together.
+ 5 VDC
The ground level from the analyzer's internal DC power supplies.
Teledyne API Model T360/T360M Operation Manual
STATUS
6 7 8 D
NOTE
CONDITION
concentration is above the set point for
2
concentration is above the set point for
2
+
07272B DCN6552