Communication Interfaces

Value Parameter

Item settings, depending on what they are, use various value types. Table 10 provides a list of the possible value types and their description.

Table 10 Value types

Type

Definition

 

 

Numeric

An integer numeric value in the units indicated by the item name. For example, a System Voltage

 

Rating of 480 would indicate 480 volts.

Scaled

Similar to the Numeric, this value type is an integer that has been scaled, usually to remove

 

decimal points that would normally appear within the value. In this case, a value of 2.5 may actually

 

be input as simply 25. For all Scaled types, the scaling appears in Table 11.

String

Certain settings are represented by alphanumeric character strings, such as setting the System

 

Model Number to Liebert STS2.

Enumeration

This type uses an indexed list to represent possible choices. One example is the Modem Baud

 

Rate which uses a value of 0 to select 2400 bps, 1 for 9600 bps, and 2 for 19200 bps.

Bit-packed

This type of value uses a hexadecimal binary word, where each of the sixteen bits in the word has

 

the value of 1 (True) or 0 (False). Although somewhat difficult to use, it packs a large amount of

 

data within a single entry. A detailed description of this type appears in section 12.1.3 - Setting

 

Bitpacked Options with the Terminal on page 81.

Event Masks

This type is a specially formatted and is used to customize the behavior of each fault and alarm in

 

the system. See 12.1.4 - Setting Event Masks with the Terminal on page 84 for instructions on

 

configuring Event Mask parameters.

Table 11 shows the various groups, the settings contained within, and the type of value it requires.

Table 11 Group settings and values

Group

Item:

Description

Value Type

Value Notes

 

 

 

 

 

 

1

Input Volts (PDU)

Integer

Set per system spec.

Group 1:

 

 

 

 

2

Volts

Integer

Set per system spec.

System

 

 

 

 

3

Current

Integer

Set per system spec.

Ratings

 

4

Frequency

Scaled

Desired freq. x 10 (600 = 60 Hz)

 

 

 

 

 

 

1

Language

Enumeration

[Not supported at this time]

 

 

 

 

 

 

2

System Model Number

String

14 Character max.

 

 

 

 

 

 

3

System ID Number

String

8 Character max.

 

 

 

 

 

 

4

System Tag Number

String

8 Character max.

 

 

 

 

 

 

5

System Order Number

String

8 Character max.

 

 

 

 

 

 

6

Options_1

Bitpacked

14 Character max.

 

 

 

 

 

 

7

Autodial Primary Line

String

20 Character max.

Group 2:

 

 

 

 

8

Autodial Secondary Line

String

20 Character max.

System

 

 

 

 

9

Autodial Pager Number

String

20 Character max.

Settings

 

10

Autodial Pager PIN

String

10 Character max.

 

 

 

 

 

 

11

Modem Init String

String

20 Character max.

 

 

 

 

 

 

12

Modem Baud Rate

Enumeration

0 = 2400, 1 = 9600, & 2 = 19200 bps

 

 

 

 

 

 

13

Modem LGS Check - Day

Bitpacked

 

 

 

 

 

 

 

14

Modem LGS Check - Time

Bitpacked

 

 

 

 

 

 

 

15

Comms Options 1

Bitpacked

See section 12.1.3.

 

 

 

 

 

 

16

Comms Options 2

Bitpacked

See section 12.1.3.

 

 

 

 

 

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Liebert 100-1000A user manual Value Parameter, Value types, Group settings and values