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MASTERTRACE
Appendix G MR100 for Windows CE
G.3
(1) Program Enable edit box allows user to enable or disable programming in MR100. Once it is
disabled, MR100 will become a purely monitoring system and nothing can be changed by user. Since this is
a very important feature, password is needed for change to be made on Program Enable.
(2) Temperature Units edit box is used to define whether the temperature-related variables are
displayed in the units of Celsius or Fahrenheit degree.
(3) Ambient Sensing Heater edit box is used to specify the global ambient RTD in a freeze
protection panel. Its selectable choices are None, Heater 1-1, Heater 2-1, Heater 3-1 ... and Heater 30-1.
If Heater m-1, where m is the module number, is selected, Heater m-1’s RTD is chosen as the global
ambient RTD. MR100 will read the global ambient RTD’s temperature measurement from Heater m-1 and
broadcast this measurement every 5 seconds to all control modules in the panel. Also, this temperature
measurement will be displayed regularly in Ambient RTD Temp data box.
(4) Although Mech Alarm Contact is a drop-down edit box, it has only 1 option. It simply
indicates that the configuration of the mechanical alarm contact (Form C) on MR100 is Normally Open.
That means terminal A1 & A2 on the Cable for QTERM-A7 (Figure G.3) would be Open if there is not a
single alarm in the communication network (heat tracing panel) and Closed otherwise. There is also an
alarm light output in terminal C+ & C- on the Cable for QTERM-A7. This output is rated 12Vdc @ 30mA
and can be directly wired to drive an LED type alarm indicator in Normally Open fashion. The color of the
indicator should agree with the jumper position on the Cable for QTERM-A7 as shown in Figure G.3.
On the System Setup Function Page, there are 3 panels designed to setup the RS485
communication between MR100 and the heat-tracing controllers. They are Baud Rate, Module Range,
and Communication Map panels.
Figure G.3 is the overall communication wiring diagram of a communication network between
MR100 for Windows CE and 4 MasterTrace heat tracing control modules. To properly setup the
communication, follow these procedures:
(1) Select the proper Baud Rate. It’s important to maintain the baud rate agreement among
MR100 and all control modules.
(2) Select the proper Module Range. Every control module in the network must have a unique
module number falling into the selected module range.
(3) Select all the modules for communication. There are 30 module boxes within the
Communication Map panel. For a control module to communicate with MR100, its corresponding module
box must be checked. On the other hand, if a module does not exist in the heat tracing panel or it is
powered down, selecting the module for communication will generate a false NO RESPONSE alarm. To
get rid of the alarm de-select the module by un-checking the module box.
Note
Many configuration parameters, such as Baud Rate, Module Range, Temperature Units,
Communication Map, etc., need to be adjusted in order to properly run MR100. Upon every new
adjustment, these configuration parameters are automatically saved to file mrconfig.txt so that the
user does not have to re-adjust these parameters next time when MR100 is initiated.
Summary of Contents for MASTERTRACE
Page 1: ...MASTERTRACE TM OPERATOR S MANUAL HEAT TRACING CONTROL ...
Page 54: ...MASTERTRACE Chapter 7 Networking Modules 7 2 Figure 7 1 MASTERTRACE System Network ...
Page 87: ...D 2 MASTERTRACE Appendix D Typical Wiring Diagrams MS 2DXH0 MS 2DIN2 MS 5ADXH0 ...
Page 88: ...MASTERTRACE D 3 Appendix D Typical Wiring Diagrams MS 5ADIN2 MS 5ATXH0 ...
Page 89: ...D 4 MASTERTRACE Appendix D Typical Wiring Diagrams MS 10ADIN2 MS 10ADXH0 ...
Page 90: ...MASTERTRACE D 5 Appendix D Typical Wiring Diagrams MS 10ADIN2X MS 10ADIN2T ...
Page 91: ...D 6 MASTERTRACE Appendix D Typical Wiring Diagrams Driving Contactors Serial Communication 1 ...
Page 92: ...MASTERTRACE D 7 Appendix D Typical Wiring Diagrams Serial Communication 2 ...