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Watlow 8PID Controller User Manual

Page 49

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8

Examples:

Channel Input Type

Setpoint Entered

Interpretation

Thermocouple

0050

50 Degrees F

Millivolt Range

0050

5.0% Full Scale

NOTE: No internal check is made to confirm that the setpoint entered is valid within
the channel input TYPE operating range. It is the users responsibility to insure that
valid setpoints are entered with respect to the channel type designated.

To set the High Alarm setpoint:

X (n) H (abcd)

n is the loop number 1 to 8
H is the high alarm indicator
abcd is the setpoint, 0 to full scale

Example:

Command: X1H1100

sets loop 1 (J T/C) high alarm at 1100F

Response: X1H1100

X (n) HQ

Example:

Command: X1HQ

Response: X1H1100

To set the Low Alarm setpoint for a given loop:

X (n) L (abcd)

n is the loop number 1 to 8
L is the low alarm indicator
abcd is the setpoint, 0 to full scale

Example:

Command: X2L0100

Sets loop 2 (Millivolt input) lower alarm
value at 10 % Full Scale

Response: X2L0100

To query the low alarm value for a given loop:

X (n) LQ