Dynalco SC-2124M User Manual

3690 N.W. 53rd Street

Fort Lauderdale, FL 33309

SC-2124

SC-2124M

24 Channel Universal Scanner

Installation and Operation

Manual

P/N 145F-11902

Rev. 3.30

(c) Copyright 2000, Dynalco Controls

All Rights Reserved
Published: October 6, 2000
Revised: October 21, 2009

1

TABLE OF CONTENTS

1.0 Introduction 3

1.1 Ratings & Certification 6

2.0 Installation 7

2.1 Panel Cutout 7

2.2 Wiring 8

2.3 Mounting 10

3.0 Setup 13

3.1 HOST Software 13

3.1.1 Setup Screen 14

3.1.2 Configuration File 15

4.0 Standard Operation 16

4.1 RESET 17

4.2 START 17

4.3 ALARM 18

4.4 SHUTDOWN 18

5.0 User Interface 19

5.1 Navigation 19

5.2 Run Screens 21

5.2.1 Title Screen 21

5.2.2 Main Menu Screen 22

5.2.3 Main SCANNER Screen 22

5.2.4 SCAN Screen 23

5.2.5 Custom Screen(s) 23

5.2.6 Channel Screens 23

5.2.6.1 HELP Screens 24

5.2.7 SNAP Screen 24

5.2.7.1 First-Out Screen 24
FIGURES

Configuration Screen 14

1
2 Run Screens 20

APPENDICES
Appendix A Configuration Parameter List 25

Appendix B Example of a Configuration File 54
Appendix C Instructions for Downloading WinHost 67
Appendix D Modbus Addresses 68
Appendix E SC-RTD Module 69

2

1.0 Introduction

The SC-2124 is a microprocessor-based universal scanner for continuous monitoring of up
to 24 channels measuring temperature from thermocouples, pressure or any other analog
signal that can be represented by either 0-5V or 4-20mA . Each scanner channel may be
configured for the following input types:

• J, K, E, or T thermocouple inputs

• 4-20 mA inputs (8 on-board resistors available via DIP switch)

• 0-5 V Inputs

The SC-2124 provides ALARM and SHUTDOWN capabilities via two dedicated on-board 5
Amp relays (plus 2 additional general-purpose relays) and automatically TRIPs should any
user-programmable threshold be exceeded.

The SC-2124 utilizes all DB-Style Connectors on the back of the unit for a cleaner wiring
arrangement. All wiring to the unit is done via separate DIN-RAIL type terminal modules and
then DB-25/15 cables connect to the unit.
The SC-2124 front panel includes a large-character, 4-row by 20-column, backlit LCD display
and application keypad. The display has several Run Screens: a SCAN Screen that displays
each enabled scanner channel, one channel screen at a time; one or more Custom Screens
to display up to four user-specified scanner channels per screen; and a SNAPSHOT Screen
that displays each enabled channel’s analog input reading at the time of the last
SHUTDOWN plus indication of the “First-Out” channel causing the shutdown.

Utilizing an on-board RS-232 communications port with a convenient DB-9 connector, the
SC-2124 provides powerful communications capabilities. Quick and easy configuration is
done from a laptop computer using the Dynalco DYNALINK software. The unit can also
switch protocols and talk Modbus RTU for continuous remote monitoring.

3

1.1 Packaging
Front View

6.55"

8.50"

4

Rear View

CONN E

CHANNELS 1 - 8

4-20mA RESISTORS

CONN C

CONTACTS

(1) RLY 1 N/C
(3) RLY 1 COM.
(5) RLY 1 N/O

RELAY

ANALOG

INPUTS
13-24

OFF

CONN D

ANALOG

INPUTS
1-12

1
2

ON

3
4
5
6
7
8

DC POWER /

INSTRUMENTS

(1) CJC INPUT
(2) +5 VDC CJC POWER
(3) GND
(14) +DC POWER
(13, 15) DC POWER GND

RS232

COMMUNICATION

CONN B

CONN A

(7) RLY 2 N/C
(9) RLY 2 COM
(11) RLY 2 N/O

(15) RLY 3 N/C
(17) RLY 3 COM
(19) RLY 3 N/O

(21) RLY 4 COM
(23) RLY 4 COM
(25) RLY 4 N/O

5

1.2 Specifications

1. Input Channels:24 Thermocouple (J,K,T, or E), 0 – 5V, or 4 – 20mA (On-Board 100
Ohm resistor provided on Channels 1 through 8).
Note: All Thermocouples have “Open-Thermocouple Detection”

2. Channel Scan Rate: Programmable (50mS Minimum)

3. Relay Outputs: 4 Relays, SPDT, rated @ 5A/24VDC, 1A/120VAC, and 0.5A/220VAC

4. Input Power: 9 – 38 VDC, 0.8A Max.

5. Sensor Power Out: +5VDC CJC Sensor Power, +8VDC RPM Sensor Power

6. Display: Backlit, 4 Line x 20 Character Alphanumeric Display with large 0.36”
Characters

7. Communications:

Hardware: RS-232

Software: Dynalink Laptop Configuration Software and Modbus RTU.

8. Rear Connections: All “DB - Style” Connectors on rear of unit. All field Wiring is done
via DIN-RAIL mounted Terminal Blocks.

9. Operating Temperature Range: -20 to +80C

10. Certification: CSA Class I, Div.2, Groups A, B, C, D

6

2.0 Installation

Installation requires a cutout as shown in section 2.1 along with four mounting holes. Once
the unit is mounted, a nearby (less than 6 feet away) location is needed for performing the
wiring to separate terminals. One method is to purchase the optional DB-to-Screw-Terminal
modules which are DIN-RAIL mounted. Also, the supplied Cold Junction Compensation
(CJC) Sensor is necessary if any thermocouples are to be used. The Dynalco ETS-202 CJC
sensor should be mounted as close as possible to the location where the thermocouple wires
are terminated.

2.1 Panel Cutout

5.30

.1875

7.85

PANEL
CUTOUT

6.25

7.50

7

2.2 Wiring

Connector A (DB-15M):
This Connector is used for the DC Power Input and the Cold Junction Compensation (CJC)

Sensor Input. In addition, depending upon the Scanner Model, it also contains Meter Bus
signals and an RPM Input.

Pinout: Pin#

Pin Name
1 CJC Sensor Input (WHT)
2 +5VDC CJC Sensor Power (RED)
3 CJC Sensor Common (BLK)
4 +8VDC RPM Sensor Power
5 RPM Input
6 RPM Common
7 NO CONNECTION
8 NO CONNECTION
9 Display (IIC Bus) Data
10 Display (IIC Bus) Clock
11 CAN Bus +
12 CAN Bus ­13 Common
14 + DC Power In
15 DC Power Common

Connector B (DB-9F)
This Connector is used for RS-232 Communications to either a Laptop for Configuration or a

Modbus Communications Link.
Pinout: Pin# Pin Name

1 NO CONNECTION
2 Transmit Data Out
3 Receive Data In
4 NO CONNECTION
5 Common
6 NO CONNECTION
7 NO CONNECTION
8 NO CONNECTION
9 NO CONNECTION

8

2.2 Wiring (Cont’d)

Connector C (DB-25M)
This Connector provides Contact Outputs for the 4 on-board relays.
Pinout: Pin# Pin Name

1 Relay 1 NC Contact
2 NO CONNECTION
3 Relay 1 Com
4 NO CONNECTION
5 Relay 1 NO Contact
6 NO CONNECTION
7 Relay 2 NC Contact
8 NO CONNECTION
9 Relay 2 Com
10 NO CONNECTION
11 Relay 2 NO Contact
12 NO CONNECTION
13 NO CONNECTION
14 NO CONNECTION
15 Relay 3 NC Contact
16 NO CONNECTION
17 Relay 3 Com
18 NO CONNECTION
19 Relay 3 NO Contact
20 NO CONNECTION
21 Relay 4 NC Contact
22 NO CONNECTION
23 Relay 4 Com
24 NO CONNECTION
25 Relay 4 NO Contact

2.2 DIP Switch (Rear of Unit)

Channels 1 – 8 have a 100 Ohm resistor available across their inputs for use with 4-20mA
inputs ONLY. Only move the appropriate DIP switch to the “ON” side if that channel is to be
configured as a 4-20mA input.

If any inputs besides channels # 1 – 8 are to be configured for 4 – 20 mA, a 100 ohm resistor
will need to be installed across the corresponding input channel terminations on the terminal
block.

NOTE: Setting the DIP switch to “ON” for either a 0-5V or thermocouple input will result in
faulty operation of the SC-2124.

9

2.2 Wiring (Cont’d)

Connectors D and E are input terminals, each requiring p/n SC-CBLE25MM cable / terminal
block assembly.

Thermocouples can be connected to any input of either connector D or E.
For linear inputs (4 – 20 mA or 0 – 5 VDC) it is recommended to connect the wires to the

appropriate terminals for connector D. However, either connector D or E may be used. See
previous page for information on DIP switch settings for 4 – 20 mA inputs.

Any RTD inputs require the RTD module p/n SC-RTD, which includes the cable assembly. In
this case ,p/n SC-CBLE25MM will not be required. Note that (1) SC-RTD will handle up to 12
RTD inputs and can be connected to either connector D (Ch # 1 – 12) or connector E (Ch #
13 – 24).

Instructions for SC-RTD module configuration are in Appendix E.

Connector D (DB-25F)
This Connector provides the Analog Inputs for Channels 1 – 12.
Pinout:

Pin# Pin Name Pin# Pin Name
1 Channel 1 (+) 14 Channel 1 (-)

2 Channel 2 (+) 15 Channel 2 (-)
3 Channel 3 (+) 16 Channel 3 (-)

4 Channel 4 (+) 17 Channel 4 (-)

5 Channel 5 (+) 18 Channel 5 (-)
6 Channel 6 (+) 19 Channel 6 (-)

7 Channel 7 (+) 20 Channel 7 (-)

8 Channel 8 (+) 21 Channel 8 (-)

9 Channel 9 (+) 22 Channel 9 (-)
10 Channel 10 (+) 23 Channel 10 (-)
11 Channel 11 (+) 24 Channel 11 (-)
12 Channel 12 (+) 25 Channel 12 (-)

10

Connector E (DB-25F)
This Connector provides the Analog Inputs for Channels 13 – 24.
Pinout:

Pin Name Pin# Pin Name

Pin#
1 Channel 13 (+) 14 Channel 13 (-)

2 Channel 14 (+) 15 Channel 14 (-)

3 Channel 15(+) 16 Channel 15 (-)
4 Channel 16 (+) 17 Channel 16 (-)

5 Channel 17 (+) 18 Channel 17 (-)

6 Channel 18 (+) 19 Channel 18 (-)
7 Channel 19 (+) 20 Channel 19 (-)

8 Channel 20 (+) 21 Channel 20 (-)

9 Channel 21 (+) 22 Channel 21 (-)
10 Channel 22 (+) 23 Channel 22 (-)
11 Channel 23 (+) 24 Channel 23 (-)
12 Channel 24 (+) 25 Channel 24 (-)

11

2.2 Wiring (Cont’d) Optional DB cables and

R

DB-to-Screw -Terminal DIN-RAIL Modules are available

CONN E

CONN D

ANALOG

INPUTS
13-24

ANALOG

INPUTS
1-12

4-20mA ENABLES

CHANNELS 1 - 8

OFF

ON

RS232

COMMUNICATION

CONN B

CONN C

RELAY

CONTACTS

(1) RLY 1 N/C

(3) RLY 1 COM.

(5) RLY 1 N/O
(7) RLY 2 N/C

(9) RLY 2 COM

(11) RLY 2 N/O

(15) RLY 3 N/C

(17) RLY 3 COM

(19) RLY 3 N/O
(21) RLY 4 COM

(23) RLY 4 COM

(25) RLY 4 N/O

DC POWER / CJC

(1) CJC INPUT

(2) +5 VDC CJC POWE
(3) GND
(14) +DC POWER
(13, 15) DC POWER GND

CONN A

(ANALOG INPUTS 13-24)

Note that terminal blocks for connectors A, C, D & E may
be different than illustration above, although terminal
designations on pages 8 – 11 are correct.

CJC

SENSOR

(ETS-202)

CONN ACONN CCONN E CONN D

(DC POWER/ CJC) (RELAYS)(ANALOG INPUTS 1-12)

12

3.0 Setup

The SC-2124 requires the user to configure a variety of parameters: SCANNER channel
analog inputs; ALARM & SHUTDOWN TRIP conditions; Main SCAN Screen; and other
various other parameters. These parameters must be configured through the use of Dynalco
Controls HOST software. The user configures SCANNER parameters by either a user­edited download file or individual parameter modification. The following sections details use
of the HOST software, download file, and parameter modification.

3.1 HOST Software

Dynalco Controls HOST software provides serial communication between a PC or laptop and
the SC-2124. WinHost is compatible with Windows 95, 98, 2000 & XP operating systems.

When communicating via WinHost software, the SCANNER must be connected via a
standard RS-232, 9-pin, male-female, serial communication cable. The HOST software
communicates to the SCANNER via Dynalink, Dynalco Control’s serial communication
protocol.

Each parameter has its own parameter number as listed in the spec file example in
Appendix B

When you open WinHost, you should see current parameters in the monitor screens. If you
see "??" instead of parameter values, check the serial link cable.

Any parameter value can be read by entering the parameter # in the "Command" line located
in the lower left corner of the monitor screen in WinHost. For example if you want to know
the value of parameter # 8001.1 (input type for channel 1) you would type 8001.1 in the
command line and hit enter. You will see the value of that parameter in the "Response" line
which is below the command line.

If you want to change the value of parameter 8001.1 so that channel 1 would be configured
for a K type thermocouple, you would then type in 8001.1=1 in the command line. After
hitting enter, you should see an "@" sign in the response line, indicating that the new value
was accepted.
Remember to always click on "Store" at the top of the screen after making changes.
Otherwise, the new values will be lost if you lose power to the SC2124.

In order to save any changes made to the scanner, you must store the new parameters as
follows:

Enter a letter "S" in the command line after making the changes. The response should be the
usual "@" sign.
During the store process, the SC2124 display will indicate "Configuration Parameter Store In
Progress." Make sure that the power is not removed during the "store" operation or you will
lose the saved data and all parameters will return to default values.

See Appendix B for instructions on downloading and installing WinHost software.

13

3.1.1 Setup Screen

The SCANNER has the capability of communicating via Dynalink (point to point) using the
communications cable p/n CBLE-8509 or via Modbus (SC2124M only) through the serial
communications port CONN B. The user must setup the SCANNER to communicate via
Dynalink in order to configure the SCANNER with HOST software. A Configuration Screen
is available to switch between the Dynalink and Modbus protocols (See Figure 1).

Figure 1, Configuration Screen

COMMUNICATION
SETUP SCREEN

0

SELECT COMM PROTOCOL

>DYNALINK< MODBUS

D D M M

To enter Configuration Mode, the user must press the SETUP Key. The Communication
Setup Screen prompts the user to select a communication protocol. To communicate with
Dynalco Controls HOST software, the user must select the Dynalink protocol. To
communicate with an external device on a Modbus, the user must select the Modbus
protocol. To select either protocol, the user must press either of the Soft Keys located under
the corresponding protocol listed in the last row of the Configuration Screen. The currently
selected protocol is enclosed in brackets (‘>’ and ‘<’). The default SCANNER protocol is
Dynalink.

To exit Configuration Mode, the user must press and hold the ESC Key for one second.

14

3.1.2 Configuration File

The easiest method for the user to configure the SC-2124 is by editing and downloading a
configuration file to the SCANNER. The configuration file is a template file that contains all
configurable parameters and an explanation for all parameter configuration settings. The
user must enter desired configuration values for all appropriate configuration parameters
before downloading the file to the SCANNER.

The configuration file can be edited with any text editor or word processor that can save files
in text format, such as Notepad or Wordpad available on Windows PCs.

The download file contains configuration comments and parameter configurations. The
comments for the configuration parameters explain the function for each parameter and the
programmable values associated for each parameter. The comments are any text or text
characters that follow a semicolon. General SCANNER configuration comments should not
be deleted. However, some comments, such as ‘<ANALOG INPUT CHANNEL #01>’, have
been included for the user to overwrite with application-specific descriptors, such as ‘Engine
Exhaust Temperature’.

The configuration file’s parameter configurations program the corresponding SC-2124
parameters when the file is downloaded to the SCANNER.

See Appendix A for an example of the standard SC2124.spc configuration file.

15

4.0 Standard Operation

After power-up, the SC-2124 performs all standard SCANNER operations continually. These
operations include scanning all enabled analog input channels to update the channel
readings; monitoring channel inputs for Open Thermocouple, ALARM, or SHUTDOWN TRIP
conditions; performing Dynalink or Modbus communications to external devices.

To update all scanner channels, the SCANNER reads all enabled channels’ current analog
input readings. These readings are performed continuously and sequentially for all enabled
scanner channels. Current channel measurement readings are averaged with the previous
value to update the current analog input channel value.

The SCANNER then monitors each channel’s value compared to the channel’s configured
ALARM and SHUTDOWN thresholds. If any of the channel thresholds is exceeded, the
channels are considered to be in a fault state, and the SCANNER TRIPs an ALARM or
SHUTDOWN (See Sections 4.3 & 4.4). In addition, the SCANNER monitors all
thermocouple channels for Open Thermocouple detection. If any thermocouple channel is
open, the SCANNER labels that channel as open and displays ‘OPEN TC’ instead of that
channel’s current analog input reading. Detection of an open thermocouple on any scanner
channel may also result in an ALARM or SHUTDOWN (See Sections 4.3, 4.4, & 3.1.2.1).

Lastly, the SCANNER continually communicates with any external devices that initiate
communication and request SCANNER parameters. The SCANNER is capable of
communicating by Dynalink and Modbus. Only one serial communication port is available on
the SC-2124; thus, only one type of communication may occur on the port at any one time
(See Section 3.1). Dynalink would be used primarily while the SCANNER is being
configured using Dynalco Controls HOST software. Modbus communication would be used
to connect the SCANNER to other devices that communicate via Modbus.

16

4.1 RESET

After power-up, the SC-2124 starts up in a RESET condition that assumes that all channels
are in a non-fault state, initializes the ALARM and SHUTDOWN TRIP conditions to a non­fault state, and forces all relays and discrete outputs to their non-fault states. After startup,
however, the user must manually RESET any TRIP conditions by a RESET key press from
the front panel or by setting the RESET parameter via HOST software (See Section 3.2.3).
This forces the user to actively acknowledge every SCANNER ALARM and SHUTDOWN.

When a RESET is manually triggered, the SCANNER clears the ALARM and SHUTDOWN
TRIP conditions and forces all relays and discrete outputs to their non-fault states. The
RESET is performed even if any scanner channels are in a fault state. If this is the case, the
SCANNER immediately TRIPs a new ALARM or SHUTDOWN (See Sections 4.3 & 4.4).

4.2 START

After RESET, the user may trigger specific SCANNER monitoring conditions via a START
request. To trigger a START request, the user must press the START key from the front
panel or set the START parameter via HOST software (See Section 3.2.3).

When a START is triggered, the SCANNER reloads the TRIP Class B timer with its initial
timer value, expressed in minutes. Once loaded, the timer ticks down until it expires,
whereupon all TRIP Class B channels become active. If any Class B channel is in a fault
state, no ALARM or SHUTDOWN is TRIPPED until the Class B timer is expired.

17

4.3 ALARM

The SCANNER provides a precautionary ALARM warning to alert the user to potentially
hazardous or dangerous input conditions. The SCANNER monitors all enabled scanner
channels’ current analog input readings and compares each channel’s reading with a user­configurable ALARM threshold. If any channel’s ALARM threshold is exceeded, the
SCANNER TRIPs an ALARM condition and blinks the ALARM indicator LED on the front
panel. A SCANNER ALARM is not latched and clears if no channel’s ALARM threshold is
faulted.

4.4 SHUTDOWN

The SCANNER provides a protective SHUTDOWN fault to guard against hazardous or
dangerous fault conditions. The SCANNER monitors all enabled scanner channels’ current
analog input readings and compares each channel’s reading with a user-configurable
SHUTDOWN threshold. If any channel’s SHUTDOWN threshold is exceeded, the
SCANNER TRIPs a SHUTDOWN condition and blinks the SHUTDOWN indicator LED on
the front panel.

When a SHUTDOWN occurs, the SCANNER saves the channel that caused the
SHUTDOWN to non-volatile memory as the First-Out channel. This First-Out channel is the
first channel that the SCANNER detects in a SHUTDOWN fault state. The SCANNER
displays the First-Out cause of the SHUTDOWN on the Main SCANNER Screen (See
Section 5.2.3). A SCANNER SHUTDOWN is latched and is not cancelled until
acknowledged by a RESET (See Section 4.1).

At the time of a SHUTDOWN, other scanner channels may be in a SHUTDOWN fault state.
Since several channels may be faulted, it is possible that another scanner channel besides
the First-Out channel caused the actual SHUTDOWN—the SCANNER merely detected and
labeled one faulted channel before the actual First-Out channel.

To aid the user in analyzing a SCANNER SHUTDOWN, the SCANNER also takes a Snap
Shot of all enabled scanner channels’ analog input readings at the time of the SHUTDOWN
and saves these Snap Shots to non-volatile memory. These Snap Shot values are displayed
on the SNAP Screen (See Section 5.2.7) and may be viewed after the user acknowledges
the SHUTDOWN condition via a SCANNER RESET. Only one set of SHUTDOWN Snap
Shot values is saved to memory at any one time. When a subsequent SHUTDOWN occurs,
the new Snap Shot values overwrite the old values in memory.

18

5.0 User Interface

The SC-2124 user interface located on the front panel of the SCANNER consists of a large­character, 4-row by 20-column, backlit LCD display and an application keypad. The LCD
display is used to display SCANNER channel readings, SHUTDOWN First-Outs,

SHUTDOWN Snap Shot histories, and other informative statistics.

5.1 Navigation

The application keypad is used to navigate between Run Screens that display various
SCANNER readings and statistics. The keypad has the following keys used for navigation:

• UP, DOWN, LEFT, RIGHT Keys Navigate to screen in the desired direction

• Soft Keys Located directly under the LCD display,

these keys navigate to various screens as
indicated in the last line of the LCD display

• RESET Key RESET SCANNER

• START Key START SCANNER timers

• Setup Key Enter Configuration Mode

• ESC Key Navigate up one menu level; exit from

Configuration Mode

In addition to navigation, the user may execute specific key-press events from certain
screens. These screen-specific functions are typically labeled above corresponding Soft
Keys. To execute any screen-specific event function, the user must press and release the
corresponding Soft Key located below the labeled function. To repeatedly execute some
event functions, the user must press and hold the corresponding Soft Key. All SC-2124
screen-specific functions are described in the following sections that detail screen operation.

19

Figure 2, Run Screens

120 10

110 10

SCN CH02 PIST 1 PRES

In: 738 PSI

SCN CH01 ENG TEMP

In: 1452 °F

Th: 750 PSI

Th: 1800 °F

SNAP

150 +

HELP NEXT

125 10

FIRST-OUT SCREEN

SCN CH03 PIST 2 PRES

In: 755 PSI

Th: 750 PSI

FIRST-OUT SNAP

First Out Shutdown Channel on

SNAP Screen & First-Out Screen

will blink 'FIRST-OUT' in lower

left-hand corner of screen

110 10

SCN CH02 PIST 1 PRES

In: 689 PSI

Th: 750 PSI

150 +

HELP NEXT

110 10

SCN CH24

In: DISABLED

Th: 0 °F

150 +

HELP NEXT

SCAN-2 124 R u n Scr ee ns

TITLE SCREEN

0 10

DYNALCO CONTROLS

SCAN-2124

- +

V1.00

10 0

MAIN MENU SCREEN

MAIN

SCAN CUSTOM CH SNAP

200 10

ENG TEMP 1452

PIST 1 PRES 689

PIST 2 PRES 697

200 10

SCN Ch #05 1201

SCN Ch #06 1189

SCN Ch #09 DISABLED

HELP SCREENS

150 110

SCN CH02 PIST 1 PRES

Connector: CONN 4

SCAN SCREEN CUSTOM SCREEN(S) CHANNEL SCREENS SNAP SCREEN

100 200 110 120

100 10

SCN CH01 ENG TEMP

In: 1452 °F

10 200 110 120

Th: 1800 °F

MAIN CUSTOM CH SNAP

2nd Custom Screen

If available

110 +

+ Pin : PIN 02

- Pin : PIN 15

20

5.2 Run Screens

The main purpose of the SC-2124 Run Screens is to allow the user to navigate to and from
screens that display current run-time values of scanner channels. Several screens are
available to display channel information in a few different formats (See Figure 1).

Each screen is shown with the following information: screen ID, screen text display,
navigational links, and possible screen event functions. This information is listed both in the
large, main text box area of the screen, as well as in the smaller informational boxes above
and below the main text box.

Listed in the upper, left-hand box is each screen’s navigational ID. Listed inside the main text
box is each screen’s text and run-time values display. Listed in the upper, right-hand box is
the navigational link to the next screen if the user presses the ESC Key. Listed in the boxes
below the main text box are the navigational links to other Run Screens or possible event
functions if the user presses any Soft Keys. If a navigational ID is listed, then the user
navigates to the specified screen if the user presses corresponding Soft Key. If a function is
listed by a ‘+’ or ‘-‘, then the user executes a screen-specific event function if the user
presses the corresponding Soft Key (See Section 5.1).

The following sections describe the behavior and functions available for each of the Run
Screens.

5.2.1 Title Screen

At startup, the SC-2124 displays the SCANNER Title Screen that includes the Dynalco
Controls banner, SCANNER name, and software version number. This Title Screen is
displayed for five seconds before navigating to the user-configured SCANNER Screen (See
Section 5.2.3).

In addition to the above information, this screen has two Soft Keys that increase or decrease
the LCD contrast. The left-most Soft Key decreases the LCD contrast by one step for every
key press or by one step every 200 milliseconds if the key is held. The right-most Soft Key
increases the LCD contrast by one step for every key press or by one step every 200
milliseconds if the key is held. The five second display timer is reset if any user key presses
are detected. This allows the user enough time to adjust the LCD contrast. If the user
modifies the LCD contrast, the SCANNER performs a CONFIGURATION Store to non­volatile memory at screen exit to save the contrast setting.

21