Julabo Presto Series, Operating Manual, Page: 104 / 121

Communication via Modbus TCP/IP
104
2.13.2018
Register-
address
Protocol
Address
Datatype Description Adjustable range
16 ushort control dynamics
3
0: Aperiodic
1: Standard
17 – 18 float Xp control parameter of the
cascade controller
0.1 … 99.9 1/K
19 ushort Tn control parameter of the
cascade controller
3 … 9999 s
20 ushort Tv control parameter of the
cascade controller
0 …999 s
21 – 22 float XpU control parameter of the
cascade controller
0.1 … 99.9 1/K
23 – 24 float CoSpeed for external control 0.0 … 5.0
Controller limits
40 short maximum cooling power -100 … 0
41 short maximum heating power 0 … 100
42 – 43 float Min. internal temperature of the
cascade controller
44 – 45 float Max. internal temperature of the
cascade controller.
46 short Lower band limit 0 … 200 K
47 short Upper band limit 0 … 200 K
Pump settings
50 ushort control type pressure control /
stage control
0: Stage control
1: Pressure control
2: Flow control
3: Flow control (Bypass)
51 ushort Pressure control of
internal/external pressure sensor
0: Pressure control of
internal sensor
1: Pressure control of
external sensor
52 ushort Pumpstage 1 – Pumpstage max. (74)
53 – 54 float Working pressure
(Pressure setpoint)
0 … Pressure setpoint max
(75)
55 – 56 float Working flow rate
(Flow rate setpoint)
Temperature limits
60 – 61 float Low temperature warning limit
(SubTemp)
62 – 63 float High temperature warning limit
(Overtemp)
64 – 65 float float maximum temperature
gradient, cooling
4
-100 … -0.1
- infinite (0xFF800000) for
deactivation
66 – 67 float maximum temperature gradient,
heating
4
0.1 … 100
+ infinite (0x7F800000) for
deactivation
3
The dynamics cannot be changed with the maximum temperature gradient, heating/cooling active.
4
If the maximum temperature gradient, heating/cooling, values change, the dynamics of the internal control is
automatically adjusted to “Standard”