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Section 8: SG-CPM2 Central Processing Module
• Ability to individually examine each Line Card message
• “Cold boot” option allows easy installation of default
configuration
• Built-in diagnostic “debug” mode allows each Line Card
to be monitored individually
• Serial Port COM1 features LED indicators for Transmit
(Tx) and Receive (Rx) functions
• Available COM1 baud rates: 110, 150, 300, 600, 1200,
2400, 4800, 9600, 19200 or 38400
• COM1 Data bits: 7, 8 or 9
• COM1 Parity: Even, odd or none
• COM 1 Stop Bits: fixed at 1
• Built-in Serial Communication Diagnostic Mode for COM1.
The technician can test the communication with the central
station computer and monitor what is being transmitted
to and received from the computer
• Two programmable outputs, one with front panel LED
indicator
• Buzzer mute option for system testing
• System menu for easy programming and diagnostics
• Software Version 2.1 supports SCADA Line Cards for
networks of receivers
• Software Version 2.1 supports line cards and CPM2
programming through computer
The CPM2 is the central processing module that monitors
the DVL2A Line Cards and forwards the information from
the Line Cards to the computer and printer. The CPM2 is
capable of monitoring a maximum of 14 lines from 7 DVL2A
modules.
8.1 General Information
The CPM2 16-bit micro-controller and real-time assembly
language program running at 16MHz allow the system to
quickly and efficiently execute several tasks at the same
time. The use of a unique menu display system enhances
the system’s ease of use for the operator and makes the
system configuration and programming simple and efficient.
Several diagnostics modes are available to assist the operator
in troubleshooting and maintenance.
8.2 Features
• Multi-tasking allows the receiver to perform functions that
might otherwise be delayed by a slow computer
acknowledgement response
• Fast internal communication results in practically no delay
in transfer of information between the Line Card and the
CPM2. The CPM2 is capable of polling 14 Line Cards in
1 second
• 256-event printer alarm message buffer
• 256-event computer alarm message buffer
• LCD contrast easily adjusted
Liquid Crystal Display:
2-line, 16 character per line liquid
crystal display; backlit for easy reading in low level light
“Option” light:
Indicates the state of the “Option” programmable
output. Flashing 2 seconds ON, 2 seconds OFF, with the
standard program.
[ACK] button:
Used to manually acknowledge an alarm event
when a computer is not connected to the receiver or
when the UL Receiver Option is enabled. Press the [ACK]
button to turn the “ACK” light OFF and silence the buzzer.
The [ACK] button is also used in the Configuration Mode
to select menu items.
“ACK” light:
Flashes when a message is received from the
Line Card and COM1 is disabled or disconnected.
[Enter] button:
Executes a command or scrolls the display to
the next message.
“TX” light:
Monitors the COM1 transmission signal
[Backspace] button:
Used to erase errors or move the cursor
back one character; also used to scroll the display back
to the previous message.
“RX” light:
Monitors the signal received from the computer
connected to COM1.
[Escape] button:
Used to save changes and exit a mode; also
used for other functions when indicated on the display
screen.
“TROUBLE” light:
Illuminates when a trouble condition is present
(not used).
“AC” light
: Indicates that AC power is present.
8.3 CPM2 Controls
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