Modbus protocol – Hach-Lange SC 100 User Manual

Page 52

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48

Modbus Protocol

Setup/Relay 1/Timer

Hold Type

40083

Unsigned

Integer

1

R/W

Sets which Sensor outputs are affected
during timer on time (0 = None;
2 = Selected Sensor; 13 = All Sensors)

Setup/Relay 1/Timer

Sensor Select

40084

Unsigned

Integer

1

R/W

Selects which Sensor outputs are being
held/transferred during the timers on time
(this is used when Hold type is set for
single Sensor)

Setup/Relay 1/Timer

Hold Mode

40085

Unsigned

Integer

1

R/W

Selects hold outputs vs. set transfer value
during timers on time

Setup/Relay 1/Timer

Duration Time

40086

Unsigned

Integer

1

R/W

Sets the timer on duration time (sec)

Setup/Relay 1/Timer

Period Time

40087

Unsigned

Integer

1

R/W

Sets the period between timer on events
(mins)

Setup/Relay 1/Timer

Off Delay

40088

Unsigned

Integer

1

R/W

Sets the time the affected Sensor outputs
are held/transferred after the timer turns
off (sec)

Setup/Relay 1/Status

Level

40089

Unsigned

Integer

1

R/W

Sets the status level which will trigger the
relay

Setup/Relay 2

Source

40090

Unsigned

Integer

1

R/W

Selects data source for this relay
(0 = None; 1 = Real Time Clock;
2 = Sensor; 4 = Calculation)

Setup/Relay 2

Sensor Select

40091

Unsigned

Integer

1

R/W

Selects Sensor source when Source
= Sensor (0 = Sensor1; 1 = Sensor2)

Setup/Relay 2

Measurement
Select

40092

Unsigned

Integer

1

R/W

Selects measurement on the Sensor
(0 = Meas1 .. 3 = Meas4)

Setup/Relay 2

Type

40093

Unsigned

Integer

1

R/W

Selects the relay type (0 = Alarm; 1 =
Control; 2 = Status; 3 = Timer; 4 = Event)

Setup/Relay 2

Transfer
Setting

40094

Unsigned

Integer

1

R/W

Selects the transfer value for the relays
(0 = De-energized; 1 = Energized)

Setup/Relay 2/Alarm

High Alarm

40095

Float

2

R/W

Sets the high alarm setpoint

Setup/Relay 2/Alarm

Low Alarm

40097

Float

2

R/W

Sets the low alarm setpoint

Setup/Relay 2/Alarm

High
Deadband

40099

Float

2

R/W

Sets the high alarm deadband

Setup/Relay 2/Alarm

Low
Deadband

40101

Float

2

R/W

Sets the low alarm deadband

Setup/Relay 2/Alarm

On Delay

40103

Unsigned

Integer

1

R/W

Sets the on delay time

Setup/Relay 2/Alarm

Off Delay

40104

Unsigned

Integer

1

R/W

Sets the off delay time

Setup/Relay 2/Control

Setpoint

40105

Float

2

R/W

Sets the controller setpoint

Setup/Relay 2/Control

Phase

40107

Unsigned

Integer

1

R/W

Sets the controller phase
(0 = Low; 1 = High)

Setup/Relay 2/Control

Deadband

40108

Float

2

R/W

Sets the controller deadband

Setup/Relay 2/Control

Overfeed
Timer

40110

Unsigned

Integer

1

R/W

Sets the overfeed timer value (mins)

Setup/Relay 2/Control

On Delay

40111

Unsigned

Integer

1

R/W

Sets the on delay time (sec)

Setup/Relay 2/Control

Off Delay

40112

Unsigned

Integer

1

R/W

Sets the off delay time (sec)

Table 9: sc100 Modbus Registers (continued)

Group Name

Tag Name

Register # Data Type

Length

R/W

Description

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