beautypg.com

Despatch P1400+ Temperature Controller User Manual

Page 54

background image

48

Parameter

Modbus

Parameter No.

ASCII Ident &

Message Types

Notes

Rate

9

R/W

D

Type 2, 3/4

R/W

Derivative Time Constant value.
Read only if Self-Tuning.
ASCII range: 0 to 99m 59secs. (99.59)
Modbus range: 0 to 5999

Output 1
Cycle time

10

R/W

N

Type 2

Type 3/4

RO

R/W

0.5, 1, 2, 4, 8, 16, 32, 64,128, 256 or
512 seconds.

Scale Range
Lower Limit

11

R/W

H

Type 2

Type 3/4

RO

R/W

Lower limit of scaled input range

Scale Range
Upper Limit

12

R/W

G

Type 2

Type 3/4

RO

R/W

Upper limit of scaled input range

Alarm 1 Value

13

R/W

C

Type 2, 3/4

R/W

Alarm 1 active at this level

Alarm 2 Value

14

R/W

E

Type 2, 3/4

R/W

Alarm 2 active at this level

Manual Reset

15

R/W

J

Type 2, 3/4

R/W

Bias value. 0% to 100% for single
control output or
-100% to +100% for dual outputs

Overlap /
Deadband

16

R/W

K

Type 2, 3/4

R/W

20% to +20% of

PB_P

+

PB_S

;

Negative value = Deadband
Positive value = Overlap

On / Off Differential

17

R/W

F

Type 2, 3/4

R/W

0.1% to 10.0% of input span
Used for Primary output on/off
differential and for combined Primary
and Secondary on/off differential.

Decimal Point
Position

18

R/W

Q

Type 2

Type 3/4

RO

R/W

0 = xxxx
1 = xxx.x
2 = xx.xx
3 = x.xxx
Read only if not Linear Input.

Output 2
Cycle Time.

19

R/W

O

Type 2

Type 3/4

RO

R/W

0.5, 1, 2, 4, 8, 16, 32, 64,128, 256 or
512 seconds.

Primary Output
Power Limit

20

R/W

B

Type 2

Type 3/4

RO

R/W

Safety power limit; 0 to 100 %.

Actual Setpoint

21

RO

Current (ramping) value of selected
setpoint.

Setpoint Upper
Limit

22

R/W

A

Type 2

Type 3/4

RO

R/W

Maximum setpoint value. Current SP
to Input Range Maximum

Setpoint Lower
Limit

23

R/W

T

Type 2

Type 3/4

RO

R/W

Minimum setpoint value. Current SP
to Input Range Minimum