Detcon 10C Facilities - Manual (Page 12)

Model 10C
10C Control Module Instruction Manual Rev.0.0 Page 8 of 14
2.1 Normal Operation
While in Normal Operation of the Operator Interface, on the character display of the front panel is visible the
RTU ID, also known as Modbus Address, of this FM.
If the Fault LED indicator is lit on the front panel, there may be some SSC modules that are not
communicating if the fault is not due to a fault on any individual SSC module. To see if there exists a
communications fault or faults, press the ESC pushbutton. In response to pressing the button, the display will
scroll “Comm Faults:” and then this will be followed by further scrolling either a list of Slave IDs of SSC
slaves that are not communicating, or will be followed with “None.”.
If there is a list of Communications Faults that indicate several bad SSC modules, check to make sure that the
Number of Slaves is not set to a number larger than the number of SSC modules to be grouped with this FM.
Other reasons for Communications Faults could be that the individual SSC Modbus Addresses are not unique
or are not within the range of numbers between 1 and “Number Of Slaves”, or that the Channel 1 serial port
Modbus A and B signals are not wired to all of the SSC modules.
While in the Normal Operation mode, and in response to momentarily pressing the ENT pushbutton, the FM
will list off the status of programmed values. This is called “Program Status” and is evident in response to the
pushbutton when the display scrolls the text “PR STATUS” and if the ENT pushbutton is momentarily pressed
again, the FM will list off the status of programmed items.
2.2 Program Mode
Program Mode is accessed while in the Normal Operation Mode by pressing the ENT pushbutton and holding
it down for a few seconds. Upon release, the display should indicate that the FM is in Program Mode by
displaying the first setting option “NUM SENSORS SET”. The variables that can be set are explained in the
section on Program Mode. Return to the Normal Mode is automatic given a timeout due to inactivity, or may
be explicitly accessed through repeated pressing of the ESC pushbutton.
3.0 Normal Operation
3.1 Display Modbus Address
Normally, the FM displays its Modbus Address. This is the hexadecimal number used for the RTU ID by the
Modbus Master to address this particular FM Slave on serial channel 2.
3.2 Display Slave Addresses in Fault
Prompted by a momentary press of the ESC pushbutton, the FM will display which SSC modules are not
communicating, if any. This display will show “Comm Faults:” followed either by the word “None” or by a
list of Slave ID numbers in Hexadecimal, one at a time, for each non-reporting SSC. The end of the list is
indicated with “****” on the display before it returns to showing the Modbus Address of this FM
.
3.3 Display Program Status Summary
While in the Normal Operation mode, and in response to momentarily pressing the ENT pushbutton twice, the
FM will list off the status of programmed values. This is called “Program Status” and is evident in response to
the pushbutton when the display scrolls the text “PR STATUS” and if the ENT pushbutton is momentarily
pressed again, the FM will list off the status of programmed items.