Honeywell R0512 User Manual
Excel 50/100/500/600/800
HONEYWELL EXCEL 5000 OPEN SYSTEM
CONTROLLERS
SOFTWARE DESCRIPTION
® U.S. Registered Trademark EN2B-0092GE51 R0512
Copyright © 2012 Honeywell Inc. • All rights reserved
EXCEL 50/100/500/600/800
Trademark Information Echelon, LON, L
LonTalk, LonUsers, LonPoint, Neuron, 3120, 3150, the Echelon logo, the L
logo, and the LonUsers logo are trademarks of Echelon Corporation registered in
the United States and other countries. LonLink, LonResponse, LonSupport, and
LonMaker are trademarks of Echelon Corporation.
ONMARK, LONWORKS, LonBuilder, NodeBuilder, LonManager,
ONMARK
EN2B-0092GE51 R0512
EXCEL 50/100/500/600
CONTENTS
REVISION OVERVIEW ....................................................................................................... 5
SYSTEM OVERVIEW ......................................................................................................... 6
DATAPOINTS ..................................................................................................................... 9
PHYSICAL DATAPOINTS ................................................................................................................................. 9
FLEXIBLE DATAPOINTS ................................................................................................................................ 10
PSEUDO DATAPOINTS .................................................................................................................................. 10
GLOBAL DATAPOINTS .................................................................................................................................. 11
MAPPED DATAPOINTS (V2.04.XX OR HIGHER) .......................................................................................... 12
ATTRIBUTES .................................................................................................................... 13
ACCESS LEVEL .............................................................................................................................................. 13
ACKNOWLEDGE ALARM (V2.04.XX OR HIGHER) ....................................................................................... 13
ACTIVE STATE (PRIOR TO V2.04.X) ............................................................................................................. 14
ACTIVE STATE (EXCEL 800) ......................................................................................................................... 14
ALARM DELAY................................................................................................................................................ 15
ALARM SUPPRESSION .................................................................................................................................. 15
ALARM STATUS (PRIOR TO V2.04.X) ........................................................................................................... 15
ALARM STATUS (V2.04.XX OR HIGHER) ...................................................................................................... 16
ALARM TYPE .................................................................................................................................................. 16
ALARM DEFINITION ....................................................................................................................................... 16
CYCLE COUNT ................................................................................................................................................ 18
DELAY TIME SWITCHING UP ........................................................................................................................ 18
DELAY TIME SWITCHING DOWN .................................................................................................................. 18
DESCRIPTORS ................................................................................................................................................ 19
ENGINEERING UNIT ....................................................................................................................................... 19
FEEDBACK DELAY ......................................................................................................................................... 19
HIGH/LOW ALARM/WARNING LIMITS .......................................................................................................... 19
HOURS RUN .................................................................................................................................................... 20
HOURS RUN LOG ........................................................................................................................................... 20
HOURS SINCE SERVICED ............................................................................................................................. 20
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EXCEL 50/100/500/600/800
HYSTERESIS................................................................................................................................................... 21
INPUT/OUTPUT STATUS TEXT (PRIOR TO V2.04.XX) ................................................................................. 24
INPUT/OUTPUT STATUS TEXT (V2.04.XX OR HIGHER) .............................................................................. 24
INTERVAL COUNT .......................................................................................................................................... 24
INTERVAL LIMIT ............................................................................................................................................. 25
I/O CHARACTERISTIC .................................................................................................................................... 25
PULL-UP RESISTOR HANDLING ................................................................................................................... 26
LAST CHANGE ............................................................................................................................................... 26
LED MODE (XF823X, XFL823X, AND XFX830X MODULES) ........................................................................ 27
MAINTENANCE ALARM ................................................................................................................................. 27
MANUAL VALUE ............................................................................................................................................. 27
NETWORK VARIABLE (V2.04.XX OR HIGHER) ............................................................................................ 28
Alarm Hysteresis ..................................................................................... 21
Trend Hysteresis ..................................................................................... 22
Broadcast Hysteresis .............................................................................. 23
Intrinsic Hysteresis for Analog Input Signals ........................................... 23
NORMALLY OPEN/NORMALLY CLOSED (V2.04.XX OR HIGHER) ............................................................. 28
MOTOR RUN TIME .......................................................................................................................................... 29
OFF PHASE ..................................................................................................................................................... 29
OPERATING MODE ........................................................................................................................................ 29
OUTPUT TYPE ................................................................................................................................................ 31
POINT ALARMS .............................................................................................................................................. 31
PULSE DURATION ......................................................................................................................................... 32
SAFETY POSITION (XFX822X, XFX824X, AND XFX830X MODULES) ........................................................ 32
SCALING FACTOR ......................................................................................................................................... 32
SENSOR OFFSET ........................................................................................................................................... 33
SUPPRESS POINT .......................................................................................................................................... 33
SWITCHING DOWN ........................................................................................................................................ 33
SWITCH-ON COUNTER .................................................................................................................................. 34
Subtype ................................................................................................... 31
TECHNICAL ADDRESS .................................................................................................................................. 34
TREND LOGGING ........................................................................................................................................... 34
USER ADDRESS ............................................................................................................................................. 36
EN2B-0092GE51 R0512 4
Value Hysteresis ..................................................................................... 35
Trend Cycle (V2.03.x) ............................................................................. 35
EXCEL 50/100/500/600/800
VALUE ............................................................................................................................................................. 36
WRITE PROTECTION ..................................................................................................................................... 37
LIST OF DATAPOINT ATTRIBUTES .............................................................................................................. 38
TIME PROGRAMS ............................................................................................................ 41
STRUCTURE ................................................................................................................................................... 41
INDIVIDUAL TIME PROGRAMS ..................................................................................................................... 41
GENERATING A TIME PROGRAM ................................................................................................................. 43
Daily Program .......................................................................................... 41
Weekly Program ...................................................................................... 42
Annual Program....................................................................................... 42
Special Day List ....................................................................................... 43
The "TODAY" Function ............................................................................ 43
ALARM HANDLING .......................................................................................................... 45
POINT ALARMS .............................................................................................................................................. 45
SYSTEM ALARMS .......................................................................................................................................... 46
USER PROGRAM ALARMS ............................................................................................................................ 51
DATA STORAGE ............................................................................................................................................. 51
System Alarms Suppression (V. 2.04.xx or higher) ................................. 50
Alarms Sent across the System Bus ....................................................... 51
TEST MODE (V2.03.X) ..................................................................................................... 53
COMMUNICATION ........................................................................................................... 53
SYSTEM BUS .................................................................................................................................................. 53
Access ..................................................................................................... 54
Bus Initialization ...................................................................................... 54
Bus Communication ................................................................................ 54
I/O Runtime Synchronization ................................................................... 54
Initialization of Distributed I/O Modules ................................................... 55
New Bus Devices .................................................................................... 55
Network-Wide Controller Time Synchronization ...................................... 55
Point Refreshing ...................................................................................... 56
PC COMMUNICATION .................................................................................................................................... 56
EXCEL IRC ...................................................................................................................................................... 56
REMOTE COMMUNICATION .......................................................................................................................... 56
REMOTE TRENDING (DIAL-UP) ..................................................................................................................... 58
MODEMFAQ .................................................................................................................................................... 59
General .................................................................................................... 58
Controller Firmware 2.03.xx and Higher .................................................. 58
Controller Firmware 2.04.xx and Higher .................................................. 58
Excel 800 ................................................................................................. 59
MISCELLEANOUS ........................................................................................................... 60
CUSTOMIZE WINDOWS DEFAULT REGIONAL AND LANGUAGE SETTINGS ........................................... 60
INDEX .............................................................................................................................. 83
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page
change
REVISION OVERVIEW
The following pages have been changed from the previous issue of this document:
33 Section “SENSOR OFFSET” added
5 EN2B-0092GE51 R0512
EXCEL 50/100/500/600/800
SYSTEM OVERVIEW
General Excel 50/500/800 controllers support both LONWORKS communi c ation and the
Software The Excel 50/100/500/600/800 system includes a comprehensive software package
Firmware version number All information appearing in this Software Description is valid for firmware versions
Honeywell proprietary C-Bus communication. All L
described in the L
Excel 50/100/500/600/800 is a control and monitoring system specially designed for
use in buildings. These Excel controllers use the latest Direct Digital Control (DDC)
technology. Excel 50/500/800 controllers are also capable of communicating on an
open Echelon® L
particularly well-suited to controlling buildings such as schools, hotels, offices, and
hospitals. Excel 50/100 controllers differ from Excel 500/600/800 controllers in
having a fixed input/output configuration. Excel 50 controllers have a smaller fixed
input/output configuration, and are designed for smaller buildings such as
restaurants, shops, banks, and offices.
Excel 50/100/500/600/800 functions are:
• Heating control
• Air conditioning control
• Energy management
• Energy optimization
• Other building management functionality
specially designed to meet the requirements of application engineers. It comprises
the following:
• Datapoint description
• Time program
• Alarm handling
• Password protection
The software package comes with all the files listed. The menu-driven format allows
quick and easy operation.
V1.3.xx and earlier. All information, functions, and attributes valid for newer
firmware versions (V1.5.xx or higher) are marked by the corresponding version
number for which they are valid. Fig. 1 shows various controllers and the firmware
version numbers that they support.
ONWORKS Mechanism document (EN0B-0270GE51).
ONWORKS® network. Excel 50/100/500/600/800 controllers are
ONWORKS-related information is
6 EN2B-0092GE51 R0512
EXCEL 50/100/500/600/800 OVERVIEW
7
firmware ≤ 2.06.07
firmware ≥ 2.06.08
firmware ≤ 2.06.07
firmware ≥ 2.06.08
Fig. 1. Controllers and their supported firmware versions
Excel 50 firmware compatibility Please always make sure that your firmware and the bootstrap loader match; if in
doubt, consult Software Release Bulletin(s). Special care must be taken in
particular in the case of the combinations of firmware and bootstrap loader with
XD50B-xxx modules as set forth in Error! Reference source not found..
Table 1. Firmware / bootstrap loader compatibility with XD50B-xxx modules
bootstrap loader ≤ 1.01.07 NO* OK
bootstrap loader ≥ 1.01.08 OK OK
*Problems may occur when LONWORKS bus is in use.
Table 2. Firmware / bootstrap loader compatibility with XD50-xxx modules
bootstrap loader ≤ 1.01.07 OK OK
bootstrap loader ≥ 1.01.08 OK OK
*Problems may occur when LONWORKS bus is in use.
Datapoint description Datapoints are the basis of the Excel 50/100/500/600/800 system. Datapoints
contain system-specific information such as values, status, limit values, and default
settings. The user has easy access to datapoints and the information they contain.
The user can recall and modify information in the datapoints.
Time programs Whenever you want, you can use time programs to enter the setpoint or status for
any datapoint. The following time programs are available:
• Daily programs
• Weekly programs
EN2B-0092GE51 R0512
OVERVIEW EXCEL 50/100/500/600/800
• Annual programs
• The "TODAY" function
• Special day list
Daily programs are used to create a weekly program. The annual program is
created automatically by multiplying the weekly program and then incorporating
additional daily programs. The "TODAY" function enables you to have a direct
influence on the switching program. This function enables you to allocate a setpoint
or status to the selected datapoints for a defined time period. This action does not
depend on the current daily program.
Alarm handling The alarm handling facility offers system security. Alarm signal s can, for example,
Application program You can use the Honeywell CARE engineering tool to create application programs
Passwords Your control system is also protected by passwords. This ensures that only
alert the operator to maintenance work that is due. All alarms that occur are stored
in data files and reported immediately. If your system configuration allows, you can
also list alarms on a printer or transmit alarms to higher-level front-ends. There are
two kinds of alarm: Critical and Non-critical. Critical alarms have priority over noncritical alarms. System alarms, caused by a fault in a controller, are always critical
alarms.
To distinguish between alarm types, you can generate your own alarm messages or
select appropriate messages already in the system.
The following events all generate alarm messages:
• Exceeding limit values
• Overdue maintenance work
• Totalizer readings
• Digital datapoint changes of state
for your system. A particular advantage offered by Honeywell CARE is the ability to
create a fully functional control program without having to be familiar with the
programming language. CARE stands for Computer Aided Regulation Engineering.
authorized persons have access to the system data. There are four operator levels,
each protected by its own password.
• Operator level 1: Read only; the operator can display information about
setpoints, switching points, and operating hours.
• Operator level 2: Read and make limited changes; the operator can
display system information and modify certain preset
values.
• Operator level 3: Read and make changes; system information can be
displayed and modified.
• Operator level 4: Programming.
Password protection prevents unauthorized access system information and ensures
permanent, secure system operation.
EN2B-0092GE51 R0512 8
EXCEL 50/100/500/600/800
DATAPOINTS
An Excel 50/100/500/600/800 system can have the following number of datapoints:
• Excel 50: 22 physical (onboard I/Os) plus up to 46 physical LON I/Os
• Excel 100: 36 physical (onboard I/Os)
• Excel 500: 128 physical I/Os, extendable via L
• Excel 600: 128 physical I/Os
Furthermore, Excel 50/100/500/600 support an additional 256 pseudo datapoints.
Excel 800: 381 datapoints (random mix of physical and pseudo datapoints)
A datapoint has different attributes according to its type. Attributes are displayed
and modified on the XI581 (not with XCL5010, Excel 100C), XI582, and the PCbased XL-Online operator interfaces or on the Excel 50 MMI. Attributes contain
information about the given datapoint. This information could be:
• Input limits values
• Operating status
• Current temperature
• Elapsed run time
The following sections provide more-detailed information about the different kinds of
datapoints and datapoint attributes and explain which attributes are assigned to
which datapoints.
ONWORKS I/Os
Physical Datapoints
Physical datapoints are inputs and outputs attached to hardware devices like
sensors and actuators.
Fig. 2. Physical datapoint symbols
The following are examples of physical datapoints
Analog inputs NTC, PT 1000, PT 3000, BALCO Sensors (PT 3000/BALCO not with Excel 100C),
Analog outputs Outputs with a continuous 0...10 V output signal for controlling continuous actuators
Digital inputs Inputs for processing voltage-free signals (switches, contacts).
Digital outputs (not Excel 100C) Outputs for driving three-position actuators, for example, a damper motor; two
Totalizer inputs Digital inputs for processing pulsed signals up to 20 Hz (depending on Distributed
standard 0 (2)...10 V and 0 (4)...20 mA input, to connect e.g. outside air
temperature sensors.
(Excel 100C supplies up to 20 mA on the analog outputs).
position devices, for example
I/O module specifications), for example
, a circulation pump; 0...10 V and pulsed outputs
, metered energy consumption.
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DATAPOINTS EXCEL 50/100/500/600/800
Pulse 2 “on”
Pulse 2 “off”
Relay 1
Relay 2
Flexible Datapoints
Flexible datapoints allow the control of more than one physical output with one
datapoint. There are three subordinate types of flexible datapoints:
• Pulse 2
• Multi-stage
Pulse 2 flexible datapoint A pulse 2 datapoint allows to pulse two digital outputs (e.g. relays). When activated
• Feedback.
(e.g. set to “on”), Pulse 2 triggers one of the digital outputs, and when deactivated,
Pulse 2 triggers the other digital output.
Fig. 3. Pulse 2 flexible datapoint switching
Multistage flexible datapoint Multistage flexible datapoints allow to switch up to six physical digital outputs via
one datapoint. A typical example
stage fan. A multistage flexible datapoint provides up to six editable stage texts,
e.g., stage 1, stage 2, stage 3, etc, to be edited in CARE.
Feedback flexible datapoint Feedback flexible datapoints, also called “DO feedback DI” combine up to three
pairs of digital outputs/digital inputs to form up to three-stage switching with
feedback. The digital inputs of each pair act as the feedback point. If the digital
input does not feedback the actual equipment status within a predefined time “Off
Phase”, then the software will switch down this point type until a "non-alarm" state is
reached. In extreme cases, the point may be switched to the off position. See also
“Off Phase”.
Increased support (V2.04.xx or higher) Excel 500 controllers now support up to 60 flexible datapoints. In case of Feedback
flexible points, the maximum number is 128.
Previous firmware versions supported only up to 20 flexible datapoints.
would be a multi-stage electric heater or a multi-
Pseudo Datapoints
Excel 50/100/500/600 support 256 pseudo datapoints, while Excel 800 supports
381 datapoints (consisting of a random mix of physical and pseudo datapoints)
Pseudo datapoints are values (intermediate results and parameters) computed
while the application program is running. In contrast to physical datapoints, pseudo
datapoints are not directly connected to hardware devices.
Access via the user address During system operation, you may need to access these values. To simplify this
process, you can include pseudo datapoints in the datapoint list, where you can
access them directly via their user addresses. Like physical datapoints, pseudo
datapoints, too, can have different attributes; for example
manual value, set minimum and maximum values, or log trends.
The following are types of pseudo datapoints:
, they can specify a
EN2B-0092GE51 R0512 10
EXCEL 50/100/500/600/800 DATA POINTS
11
C
SYSTEM BUS
LON
• Pseudo analog points
• Pseudo digital points
• Pseudo totalizer inputs
• Pseudo point multistage
Pseudo analog points Pseudo analog points are software points containing an analog value in the user
Pseudo digital points Pseudo digital points are software points containing a digital value in the user
Pseudo totalizer inputs Pseudo totalizer inputs are digital software points from the user program, where a
.
Pseudo point multistage Pseudo point multistage datapoints are identical to flexible datapoint of the type
program. A pseudo analog point could, for example
, contain a flow temperature
setpoint calculated from the room setpoint and the outside air temperature via the
heating curve.
program.
For example, logical AND operation.
The AND operation provides a logical 1 output when all input conditions are also
logical 1. Otherwise the output is a logical 0. If the user program contains such an
AND operation on different input conditions, then the output could be available as a
pseudo digital datapoint.
totalizer counter input is recorded
"multistage" except that they allow for 16 stages (including the “off stage“) and the
attribute "Status Text" allows for 16 status texts to be attached. The attribute "Technical Address" is not required.
Global Datapoints
If your control and monitoring system contains more than one controller, the controllers communicate with one another via the system bus. Any given controller can
thus both receive (read) datapoints from other controllers and transmit datapoints to
other controllers. Such datapoints are referred to as global datapoints.
NOTE: The term “global” as used here encompasses more than just those points
explicitly labeled as “global” in the CARE engineering tool.
Global datapoints which a controller receives (reads) from other controllers are
referred to as local global datapoints, and global datapoints which a controller
transmits to other controllers are referred to as remote global datapoints.
During CARE engineering, the program engineer must take care that he does not
exceed the maximum allowed 256 global datapoints (remote and local) per
controller.
Fig. 4. Global datapoints are available to all controllers on the system bus
EN2B-0092GE51 R0512
DATAPOINTS EXCEL 50/100/500/600/800
Mapped Datapoints (V2.04.xx or higher)
With firmware version V2.04.xx or higher, those Excel 50/500 controllers which
feature free programmability on L
ONWORKS (those that contain the 3120E5 Neuron
chip, i.e. date code 0044 or higher) may have I/O devices connected via the
ONWORKS network. LONWORKS network variables (or individual fields of structured
L
network variables) can be mapped to the attribute "Value" of physical datapoints
(AI/DI/AO/DO). Pseudo analog, pseudo digital, and pseudo multistage points are
also supported for NV mapping.
See Excel 50/500 L
for more information on L
ONWORKS Mechanisms Interface Description, EN0B-0270GE51,
ONWORKS network variables and datapoint mapping.
EN2B-0092GE51 R0512 12
EXCEL 50/100/500/600/800
ATTRIBUTES
Each datapoint type has associated with it various parameters which allow the user
to set, e.g., the user address, the level of access protection, alarm behavior, and
other options. These parameters are called attributes. Each attribute performs a
specific function related to the datapoint. A complete list of datapoint types and their
attributes appears in Table 17 through Table 19. Not all attributes are available for
every datapoint type.
Point refreshing (V1.5.x) Four attributes ("Value", "Manual Value", "Operating Mode", and "Alarm Status") will
be simultaneously refreshed to an XL-Online operator interface.
NOTE: A complete list of attributes associated with the various datapoint types
can be found in the section "List of Datapoint Attributes" on page 38.
Access Level
Four levels of protection The attribute "Access Level" protects datapoints against unauthorized changes on
the basis of the password level needed to modify a datapoint. "Access Level"
attributes between "1" and "4" are assigned to a point. These attributes correspond
to the four password levels found in the XI581 (not with XCL5010, Excel 100C),
XI582, and XL-Online operator interfaces and the Excel 50 MMI:
• Operator level 1: Read only.
• Operator level 2: Read and make limited changes.
• Operator level 3: Read and make changes.
• Operator level 4: Programming.
For example, setting the "Access Level" attribute for the datapoint with the user
address "room temp floor 1" to "2" means that all attributes for this datapoint can
now only be edited or modified at password level 2 or higher.
Acknowledge Alarm (V 2.04.xx or higher)
The attribute "Acknowledge Alarm" allows a controller to acknowledge an alarm for
a flexible datapoint of the type "feedback" without changing the operating mode.
The controller takes the point out of alarm as soon as a rising edge is detected on
the input of the WIA statement writing to the attribute "Acknowledge Alarm".
Fig. 5. The "Acknowledge Alarm" attribute for WIA statement
This attribute is a virtual attribute and can be accessed only by a WIA statement in
CARE. It is not part of the datapoint description and therefore cannot be displayed
on an MMI or building supervisor.
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ATTRIBUTES EXCEL 50/100/500/600/800
(NC/NO system diagram)
digital input
contact status
(NC/NO system diagram)
Active State (prior to V 2.04.x)
The attribute "Active State" defines when a digital input/output is active.
NOTE: The "Active State" attribute does not reflect the current condition of a
NOTE: This is not applicable to digital inputs in applications designed for con-
The following values are possible:
• 0 = digital input/output is active when a "logical 0 signal" is present
• 1 = digital input/output is active when a "logical 1 signal" is present
Table 3 indicates the active state for various conditions of the XF523 and XFL523
modules.
Table 3. Active state for the digital input of XF523 and XFL523 modules
digital input
contact status open closed
CARE definition
NC NO NC NO
digital datapoint.
trollers using V2.04.xx firmware or higher. In such applications, this
attribute is fixed at 1, and the new attribute "Normally Open/Normally
Closed" (NO/NC) is active (see section "Normally Open/Normally Closed
(V2.04.xx or higher)" on page 28 for more details).
definition - in XL-Online DPEditor attribute "Active State"
(change Active/Passive State
text)
CARE interpretation
(control table)
display at operator interface
(status text)
1 0 1 0 1 0 1 0
1 1 0 0 0 0 1 1
OFF/
trouble:
alarm
ON/
operating
RTN*
* RTN = Return To Normal
NOTE: XFL523 Module is applicable only for V2.0.xx software.
OFF/
trouble:
alarm
ON/
operating
RTN*
ON/
operating
RTN*
OFF/
trouble:
alarm
operating
ON/
RTN*
Active State (Excel 800)
The attribute "Active State" defines when a digital input/output is active. 1 means,
that a digital input/output is active when a "logical 1 signal" is present
NOTE: "Active State" = 0 is not allowed/possible.
NOTE: The "Active State" attribute does not reflect the current condition of a
digital datapoint.
Table 4. Active State for the digital input of XF823 and XFL823 modules
OFF/
trouble:
alarm
CARE definition
definition - in XL-Online DPEditor attribute "Active State"
(change Active/Passive State
text)
EN2B-0092GE51 R0512 14
open closed
NC NO NC NO
1 1 1 1
EXCEL 50/100/500/600/800 ATTRIBUTES
15
digital input
Alarm
Alarm
CARE interpretation
(control table)
display at operator interface
(status text)
1 0 0 1
OFF/
trouble:
alarm
* RTN = Return To Normal
OFF/
trouble:
alarm
ON/
operating
RTN*
ON/
operating
RTN*
Alarm Delay
Delaying alarm outputs The alarm delay time (in seconds) is entered in the attribute "Alarm Delay". The
alarm delay time determines how long an alarm condition must exist before an
alarm is generated. Entering an alarm delay time of 10 seconds means that the limit
value must be exceeded for at least 10 seconds before this datapoint generates an
alarm. If the limit value lasts for only 7 second, then no alarm occurs.
Alarm Suppression
The attribute “Suppress Alarm” establishes whether or not alarm messages from
the following alarm attributes should be suppressed:
• Operational status
• Min/Max. limit
• Maintenance alarm
• Interval counter
• Alarm Status
The following entries are possible:
• Off Alarms not s uppress ed
• On Alarms suppress ed
Digital input example In addition to a variety of other attributes, a digital input also has the "Operating
Suppression of system The controller will not issue a system alarm when the alarm’s system alarm text
alarms (V2.04.xx or higher) starts with an @ character.
Mode", "Alarm Status", and "Maintenance Alarm" attributes. If alarm suppression is
activated for this datapoint, then no message is displayed during an operating mode
change-over, or when changing into the alarm condition, or when reaching the
maintenance alarm.
Alarm Status (prior to V2.04.x)
Alarm monitoring In the case of a digital input or a pseudo digital point, the attribute "Alarm Status"
EN2B-0092GE51 R0512
specifies whether or not alarm monitoring is required.
The following entries are possible:
• Yes: Alarm monitoring is required
• No: Alarm monitoring is not required
When alarm monitoring is required, the alarm message occurs when the digital
point changes from the active state to the passive state (alarm reached). An
additional message is generated (alarm going) when the digital point returns to the
active state
(see Fig. 6. Alarm status messaging)
reached
ending
ATTRIBUTES EXCEL 50/100/500/600/800
Operating Mode
Min. Limit
Interval Counter
Alarm Status
DI in
DI in
“Active State”
“Passive State”
Fig. 6. Alarm status messaging
NOTE: The active state and passive state are defined in the "Active State"
datapoint attribute.
Alarm Status (V2.04.xx o r higher)
Alarm monitoring In the case of a digital input or a pseudo digital point, the attribute "Alarm Status"
specifies whether or not alarm monitoring is required.
The following entries are possible:
• Yes: Alarm monitoring is required
• No: Alarm monitoring is not required
When alarm monitoring is required, the alarm message occurs depending on the
physical contact status and on the logical status as defined in the online attribute
“Normally Open/Normally Closed”.
Alarm Type
The attributes listed in Table 5 are capable not only of generating alarms, but also
of writing them to the internal alarm memory and sending them to the PC front-end
or to the modem module (when connected).
attribute always critical optional critical or non-critical
Max. Limit X
Maintenance
Alarm
Changing over the attribute "Operating Mode" always results in a critical alarm, but
the attribute "Alarm Type" offers a choice for the alarm attributes "Min. Limit", "Max.
Limit", "Maintenance Alarm", "Totalizer", and "Alarm Status" whether an alarm is
classified as critical or non-critical. Distinguishing between critical and non-critical
alarms is significant for the subsequent reporting of the alarms to the PC front-end
or to the modem module. Compared to non-critical alarms, critical alarms are given
priority on the bus when several alarms are in the alarm queue. When the type of
alarm for a datapoint has been decided, e.g. "critical" alarm type, it refers to all
alarm attributes for this datapoint.
Table 5. Alarm attributes
X
X
X
X
X
Alarm Definition
EN2B-0092GE51 R0512 16
EXCEL 50/100/500/600/800 ATTRIBUTES
17
In the datapoint description, the alarms can be influenced using the functions
described below (see also Table 6 on page 17).
Alarm type For each datapoint in the datapoint description, the user can determine whether the
Alarm delay An alarm signal can be delayed by entering an alarm delay time. An alarm signal
Suppress alarm If an alarm signal is not desired from a particular datapoint, this can be fixed in the
signals generated are to be treated as critical or non-critical alarm.
will be generated only if an alarm continues uninterrupted during the alarm delay
time.
datapoint description. Thus, all the alarm signals relevant to the particular datapoint
and the "Operating Mode" alarm types are suppressed.
Fig. 7. Alarm condition depending on point value and Suppress Alarm status
Fig. 7
shows an example of a changing point value that rises above and falls below
the limit Max 2. If Suppress Alarm is not active, then the alarm c ondition s witches
between normal to alarm, according to the limit Max 2. If Suppress Alarm is active,
then the alarm condition remains normal unless Suppress Alarm is switched off
before the point value falls below the limit Max 2. Regardless of the setting of the
Alarm suppression flag, an alarm is entered into the controller's history buffer and is
also available in the EBI alarm report.
Point alarm It is possible to view all datapoints at the operator interfaces for which the limit
value (analog point) or the alarm status (digital point) is currently exceeded.
Driven by a menu, the user address and the accompanying alarm text are displayed
on the XI581 (not with XCL5010, Excel 100C) or XI582 operator interfaces or Excel
50 MMI.
On the XL-Online operator interface, a datapoint within the framework of the
datapoint description can be seen in all four password levels. If a current alarm is
present for the point in question, the attribute “Point in Alarm” produces the display
“Yes”, otherwise “No”.
Within the framework of the datapoint description, it is possible, under the attribute
“Alarm text”, to enter an alarm text of up to 18 characters in addition to the preprogrammed text. There are 256 alarm texts in total.
Table 6 presents a summary of various alarm types and attributes.
Table 6. Alarm summary
alarm type/attributes alarm status
enter alarm
delay time
alarm
suppression
point in
alarm
no. of preprogrammed texts
supplementary
text
Limit Values selection in DPD* possible possible X 8 possible
Alarm Status selection in DPD* possible possible X 2 possible
Maintenance Alarm selection in DPD* - possible - 1 Totalizer selection in DPD* - possible - 1 Operating Mode always critical - possible - 2 System Alarms always critical - - - approx. 110 -
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ATTRIBUTES EXCEL 50/100/500/600/800
delay time
suppression
alarm
grammed texts
text
alarm type/attributes alarm status
user program reports always non-critical - - - - *DPD = datapoint description
enter alarm
NOTE: A point is still seen as “in alarm” even when alarm suppression is
enabled.
The attribute "Cycle Count" contains the value indicating the number of transitions
to the active state (see "Active State (prior to V2.04.x)" on page 14).
alarm
point in
no. of prepro-
Delay Time Switching Up
This attribute is used in conjunction with flexible points of the type "feedback". It
defines the delay time between switching upwards from one stage to another. The
delay time affects every stage. The delay time also takes effect when switching, e.g.
from manual value 0 to 2. In this case, it is switched from stage 0 to stage 1, then to
stage 2 with the delay time between the switching processes.
Range: 0 to 255s
Default value: 10s
Resolution: 1s
supplementary
Cycle Count
Fig. 8. Delay time switching up
Delay Time Switching Down
This attribute is used in conjunction with flexible points of the type "feedback". It
defines the delay time between switching downwards from one stage to another.
The delay time affects every stage.
Range: 0 to 255s
Default value: 10s
Resolution: 1s
The feedback delay time starts to count after termination of delay time switching
up/delay time switching down.
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EXCEL 50/100/500/600/800 ATTRIBUTES
19
Fig. 9. Delay time switching down
Descriptors
Informative descriptors A controller contains up to 128 physical datapoints and up to 256 pseudo
datapoints. The Excel 100C provides 36 physical datapoints. An individual user
address can be assigned to each of these 384 datapoints. 255 plain-language
descriptors can be created with a maximum of 32 characters each. These
descriptors are then assigned to datapoints in the datapoint description via the
attribute "Descriptor". Descriptors complete the information concealed behind the
user address. They can contain, for instance, a reference to a section of a building.
The following list is an example of the relationship between user addresses and
descriptors:
User Address Descriptor
Room temp floor 1 Heating circuit, West wing
Room temp floor 3 Heating circuit, West wing
Room temp floor 10 Heating circuit, East
Room temp corridor Heating circuit, East
Flow temp floor 1 Heating circuit, West wing
Lights floor 1 Building section V
Lights corridor Building section V
Engineering Unit
The attribute "Engineering Unit" contains a list for selecting different engineering
units for both analog datapoints (physical and pseudo), totalizer inputs (physical
and pseudo), and digital datapoints.
If, for instance, the external temperature is measured by an analog datapoint, the
engineering unit of this datapoint must be set to "°C" or "°F". If the electrical load is
detected by a totalizer input, the engineering unit must be set to "kWh" for kilowatthours.
Feedback Delay
The attribute "Feedback Delay" determines the time delay between, e.g. when a
pump switched on (and detected) and when this status is made available to a
program.
High/Low Alarm/Warning Limits
Specifying limit values In the case of analog inputs (e.g. inputs for sensing room temperature) and pseudo
analog points (for instance, internally computed datapoints for the heating flow
setpoint), two minimum and two maximum monitored limit values may be entered.
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The following four limit value attributes exist:
• Low Warning Limit
• Low Alarm Limit
• High Warning Limit
• High Alarm Limit
Example: Monitoring supply air temperature limits (see Fig. 10).
Exceeding the limi t values generates an alarm.
Fig. 10. Monitoring supply air temperature limits
Hours Run
Display of elapsed hours The attribute "Hours Run" returns the total number of hours during which any of the
stages is in the ON position. However, if more than one stage is in the ON position,
the "Hours Run" count is not added up, but rather counted only once. Display of the
elapsed hours run with activated hours run logging (see also "Hours Run Log" on
page 20).
NOTE: If the attribute "Active State" of the point is 0, then the OFF position is
also counted.
Hours Run Log
Hours run log An hours run log can be carried out for digital datapoints (physical and pseudo) and
for flexible datapoints, e.g. logging the hours run by a heating circuit pump. This
requires the decision: hours run log = Yes/No to be made in the attribute "Hours
Run Log". The accumulated hours run are displayed in the attribute “Hours Run”.
Hours run are logged with a sample rate of 1 minute.
Hours Since Serviced
Display hour s run since last maintenance The elapsed hours run since the last maintenance work are totaled in the attribute
"Last Maintained". If, for example
has already been running for 120 hours, then the entry in the attribute “Last
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, the maintenance alarm is 500 hours, and a pump
EXCEL 50/100/500/600/800 ATTRIBUTES
21
maintained” will be 120 hours. By comparing the attributes "Maintenance Alarm"
and "Last Maintained", the user can see that the next maintenance period will be
after an additional 380 hours have elapsed. If the maintenance alarm is reached,
and the maintenance work has been performed, the counter can be reset manually.
The counter can also be reset manually before reaching the maintenance alarm if,
for instance, the maintenance has been performed earlier. If the counter is not
reset, on expiration of the maintenance alarm, e.g. after 500 hours, the elapsed
hours run continues to be incremented, and an additional alarm will be generated
when 1000 hours running has been reached.
Hysteresis
The following hysteresis attributes allow the user to control the triggering conditions
based on a changing parameter under which actions are taken, such as alarm
signaling, writing values to buffers, etc. A hysteresis can be used, e.g., to prevent
an alarm from being generated unless the value being monitored changes by more
than a given value. This eliminates unnecessary alarm generation and reduces bus
communication traffic.
Alarm Hysteresis
Alarm hysteresis (V1.5.x) In the case of analog inputs and pseudo analog points, the attribute "Alarm
Hysteresis" is available. It provides variable hysteresis that can be implemented,
e.g., in order to reduce the cost of communicating with a remote front-end. The
hysteresis value is set from an MMI and can have a value anywhere in the range
defined by [10
the attribute "Engineering Unit". The minimum value for the hysteresis is 10
Alarms are generated under the following conditions:
• Max 1 Alarm (generated if MAX 1 is exceeded)
• Max 2 Alarm (generated if MAX 2 is exceeded)
• Max 2 Normal (generated if the value falls below MAX 2-Hysteresis)
• Max 1 Normal (generated if the value falls below MAX 1-Hysteresis)
• Min 1 Alarm (generated if the value falls below MIN 1)
• Min 2 Alarm (generated if the value falls below MIN 2)
• Min 2 Normal (generated if the value MIN 2+Hysteresis is exceeded)
• Min 1 Normal (generated if the value MIN 1+Hysteresis is exceeded)
The CARE default value (i.e. 1% of actual value and no less than 0.2) for this
attribute is 0. Access to "Alarm Hysteresis" is also possible via RIA/WIA.
NOTE: The number of decimal places can be changed only using CARE.
NOTE: Attempting to enter a hysteresis value that is less than the allowed
Example:
In this example, the number of decimal places in the attribute "Engineering Unit"
has been chosen to have a value of 2. Fig. 11
as a function of time that increases and decreases over the range from Max 1 to
Min 1.
-a
to (Max1 - Min1)] where “a” is the number of decimal places set in
minimum will result in the attribute being assigned the minimum value as
defined above.
shows an example datapoint value
-a
.
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ATTRIBUTES EXCEL 50/100/500/600/800
Fig. 11. Example of alarm hysteresis
The “normal” and “alarm” states as defined by the attribute "Alarm Hysteresis" are
the determined using the appropriate values in the formula given above:
Range = [10
-2
to (Max1 -Min1)] = [0.01 to 2]
Table 7 lists the resulting alarm conditions for the chosen hysteresis value of 0.05:
Table 7. Alarm conditions for alarm hysteresis
limit normal to alarm condition alarm to normal condition
Max 1 4.00 4.00 - 0.05 = 3.95
Max 2 5.00 5.00 - 0.05 = 4.95
Min 1 2.00 2.00 + 0.05 = 2.05
Min 2 0.5 0.5 + 0.05 = 0.55
Trend Hysteresis
Trend hysteresis (V1.5.x) The attribute "Trend Hysteresis" is available for the trend functions “Local Trend
Data” and “Trend Setup Data”. The attribute "Trend Hysteresis" prevents new
values from being written to the trend buffer unless the datapoint value changes
(positively or negatively) at more than the specified trend hysteresis. The minimum
hysteresis value is 10
-a
(a = number of decimal places set in the attribute
"Engineering Unit"). The CARE default value (i.e. 1% of actual value and no less
than 0.2) for this attribute is 0. Access to "Trend Hysteresis" is also possible via
RIA/WIA.
This value can be edited from an operator interface (XI581 (not with XCL5010,
Excel 100C), XI582, XL-Online, or Excel 50 MMI) via the B port (XC5010C/XC6010)
or the serial port, the system bus (XBS 1.3.3 and higher and XFI 1.6.1 and higher)
and CARE RIA/WIA statements. The password level for this attribute is determined
by the attribute "Access" (default initialization value in CARE is 0).
Fig. 12. Example of the attribute "Trend Hysteresis"
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EXCEL 50/100/500/600/800 ATTRIBUTES
23
MIN LIMIT
MAX LIMIT
Broadcast Hysteresis
Broadcast hysteresis (V1.5.x) The attribute "Broadcast Hysteresis" is available for the datapoint type "Global
Analog". The attribute "Broadcast Hysteresis" prevents new values from being
broadcast to other controllers unless the datapoint value changes (positively or
negatively) at least by the amount specified in the attribute "Broadcast Hysteresis".
The minimum hysteresis value is 10
attribute "Engineering Unit"), but not smaller than 0.2 (see also the example
section "
value and no less than 0.2) for this attribute is 0. Access to the attribute "Alarm
Hysteresis" is also possible via RIA/WIA.
This value can be edited from an operator interface (XI581 [not with XCL5010,
Excel 100C], XI582, XL-Online, and Excel 50 MMI) via the B port (XC5010C /
XC6010) or the serial port (Excel 100C, Excel 500), the system bus (XBS 1.3.3 and
higher and XFI 1.6.1 and higher), and CARE RIA/WIA statements. The password
level for this attribute is determined by the "Access" attribute (default initialization
value in CARE is 0). If several global points (remote points) are assigned to the
same physical point, the lowest global point "Broadcast Hysteresis" value of all
assigned global points is used.
Value Hysteresis" on page 35). The CARE default value (i.e. 1% of actual
-a
(a = number of decimal places set in the
in
Intrinsic Hysteresis for Analog Input Signals
A minimum default hysteresis of 37 mV (24 - 1 bit) for 0 to 10 V input signals is
implemented. Due to the nonlinearity of NTC sensors, the hysteresis varies over the
temperature range, whereas it is approximately constant for PT 100/1000/3000 and
Balco 500 sensors. Approximations of hysteresis depending on the sensor and
temperature range are summarized below.
NOTE The Intrinsic Hysteresis for analog input signals is not a user-
NTC 20k Ω Hysteresis varies nonlinearly over the entire temperature range and depending on
whether the upper boundary (MAX LIMIT) or the lower boundary (MIN LIMIT) is
exceeded. The approximations shown in
(intermediate values can be interpolated):
temperature range
programmable attribute, but rather an intrinsic hysteresis of the Excel
50/100/500/600/800.
Table 8 can be used in practice
Table 8. Intrinsic hysteresis values for various temperature ranges
average hysteresis
average hysteresis
-40 °C (-40 °F) 2.2 K (4.0 °F) 2.5 K (4.5 °F)
-30 °C (-22 °F) 1.3 K (2.3 °F) 1.3 K (2.3 °F)
0 °C (32 °F) 0.4 K (0.7 °F) 0.4 K (0.7 °F)
40 °C(104 °F) 0.5 K (0.9 °F) 0.4 K (0.7 °F)
80 °C (40 °F) 1.5 K (2.7 °F) 1.5 K (2.7 °F)
100 °C (212 °F) 3.0 K (5.4 °F) 2.7 K (4.9 °F)
130 °C (266 °F) 8.5 K (15.3 °F) 7.2 K (13.0 °F)
PT 100 (not with Excel 100C) Hysteresis increases approx. linearly with temperature.
PT 1000/1 Hysteresis increases approx. linearly with temperature.
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Average hysteresis: 0.75 K (1.35 °F)
Hyst. At -45 °C (-49 °F): 0.7 K (1.3 °F)
Hyst. At 145 °C (293 °F): 0.8 K (1.4 °F)
Average hysteresis: 0.8 K (1.4 °F)
Hyst. At -45 °C (-49 °F): 0.7 K (1.3 °F)
Hyst. At 145 °C (293 °F): 0.9 K (1.6 °F)
ATTRIBUTES EXCEL 50/100/500/600/800
Input/Output Status
Active State (prior to V.2.04.x)
Status Text
PT 1000/2 Hysteresis increases approx. linearly with temperature.
PT 3000 (not with Excel 100C) Hysteresis increases approx. linearly with temperature.
Balco 500 (not with Excel 100C) Hysteresis decreases approx. linearly with temperature.
Average hysteresis: 1.6 K (2.9 °F)
Hyst. At 0 °C (32 °F): 1.3 K (2.3 °F)
Hyst. At 400 °C (752 °F): 2.0 K (3.6 °F)
Average hysteresis: 0.8 K (1.4 °F)
Hyst. At -45 °C (-49 °F): 0.7 K (1.3 °F)
Hyst. At 145 °C (293 °F): 1.0 K (1.8 °F)
Average hysteresis: 0.9 K (1.6 °F)
Hyst. At -50 °C (-49 °F): 1.0 K (1.8 °F)
Hyst. At 150 °C (293 °F): 0.7 K (1.3 °F)
Input/Output Status Text (prior to V2.04.xx)
2 status texts per digital data output Two status texts can be assigned to each digital datapoint status. Status texts give
an overview of the condition of the sensor or switching device c onnected to the
datapoint.
The associated status text appears in the attribute "Value" depending on the actual
point status.
For instance, the status texts could be as follows for a point connected to a digital
output:
Digital point status 0: Status Text: "Passive”
Digital point status 1: Status Text: "Active”
Table 9. Relationships between I/O Status, Active State, and Status Text
0 0 active
0 1 passive
1 0 passive
1 1 active
Status Text with flexible datapoints The attribute "Status Text" allows you to describe the value sent to the controller by
the digital output Pulse 1 and by flexible datapoints. In the case of flexible
datapoints of the type "feedback", the status text refers to the value of the feedback
flexible datapoint and not to the required value.
Input/Output Status Text (V2.04.xx or higher)
With firmware 2.04.xx or higher, the relationship between physical output status and
logical output status as defined by the attribute "Normally Open/Normally Closed"
determines the display of the equivalent status text. See section "Normally
Open/Normally Closed (V2.04.xx or higher)" on page 28 for details.
Interval Count
Interval count The attribute "Interval Count" shows the totalizer value (pulse x scaling factor)
Displaying the interval count The attribute "Interval Count" can be viewed on the XI581, XI582, and Excel 50 MMI
accumulated since the last reset.
operating units as well as via the XL-Online Operating Software and building
Supervisor front-ends like XBS, EBI and XFI. Based on mathematical rounding, it is
EN2B-0092GE51 R0512 24
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