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Call-Back Configuration for the CR800/CR1000 – MultiLogger Application Note #19 – Page 1 of 12

5 Gould Road, PO Box 2155

New London, NH 03257

Voice: (603) 526-9088

info@canarysystems.com

www.canarysystems.com

Call-Back Configuration for the CR800/CR1000

MultiLogger Application Note #19

Overview

Call-back is a process where a datalogger initiates communication back to a host PC based on alarm or

other conditions that are triggered on-site. It provides more responsive feedback to field measurements

especially when compared to traditional polling methods.

This application note will detail several common call-back scenarios and the required configuration of

MultiLogger software and communication devices.

RS-232 Direct Call-Back

The diagram illustrates a datalogger connection to a computer running MultiLogger to accept the call-

back events. The hardware may include a standard RS-232 connection, or a remote location using short-

haul or fiber-optic modems. Data are collected by MultiLogger and optionally imported into the

MultiLoggerDB database where alarm actions or other notification can be initiated.

There are 2 steps to the

MultiLogger configuration.

The first requires

configuration of the Alarm

Action to allow the CR800 or

CR1000 to initiate call-back

events.

Select the Program tab of the

Logger form to access the

Alarm Action drop-down.

Select RS-232 Direct Call-

Back.

Note: This option was

included beginning with

MultiLogger version 4.3.4.

Upgrades to the current

version are available from

the Support area of our

website.

Summary of content (12 pages)

PAGE 1
5 Gould Road, PO Box 2155 New London, NH 03257 Voice: (603) 526-9088 info@canarysystems.com www.canarysystems.com Call-Back Configuration for the CR800/CR1000 MultiLogger Application Note #19 Overview Call-back is a process where a datalogger initiates communication back to a host PC based on alarm or other conditions that are triggered on-site. It provides more responsive feedback to field measurements especially when compared to traditional polling methods.
PAGE 2
The second step involves configuring the location used for storing the call-back status used in the call-back instructions. Use the menu item Program | Input Locations or the Input Locations button to display the Configure Input Locations form. Use the Location selector to advance to the second available user location at location 32. Alternately advance to the end of the list to create a new location.
PAGE 3
Modem Call-Back There are 3 different Modem call-back options supported in MultiLogger: • COM220 Modem Call-Back – A Campbell COM220 with default settings, connected to CSI I/O port. • CSI I/O Modem Call-Back – A generic modem connected (with appropriate RS-232 interface such as the SC32B or SC932) connected to the CSI I/O port. • RS-232 Modem Call-Back – A generic modem connected to the RS-232 port.
PAGE 4
The second step involves configuring the locations used for storing the call-back status and the call-back abort used in the call-back instructions. Use the menu item Program | Input Locations or the Input Locations button to display the Configure Input Locations form. Use the Location selector to advance to the second available user location at location 32. Alternately advance to the end of the list to create new locations.
PAGE 5
The last step involves configuring the phone number to be called in the case of a call-back event. Click on the gear button located to the left of the Alarm Action. This loads the programming into an editor for modification. Notice the Phone Number placeholders in the ModemCallBack instruction, as illustrated below. Enter the appropriate phone number to call for call-back in place of the nnnnnnnnnn values, keeping the numbers enclosed in quotes.
PAGE 6
For example, the following code will re-activate call-back after measurements return to normal or a certain number of iterations of the scan interval are passed. You will need to label an Input Location named CallBackReset for this programming to function correctly. See the previous sections on using the Configure Input Locations form to label a location.
PAGE 7
Connect String Configuration Guidelines In the ModemCallBack instruction used for dialing the modem the Connect String provides for identifying when a connection is established between modems. When using the Campbell modems it is generally not required to configure this string, however when using the ComRS232 option with third-party modems it generally is required to include the actual modem response. This is usually “CONNECT” followed by the baud rate of the connection, e.g. “CONNECT 9600”.
PAGE 8
You will advance to the COM properties dialog. Select the Bits per second to match the connection name and modem communication speed. Note: The Bits per second selection only configures the speed of communications between the computer (or datalogger) and modem, it does not generally configure the connection speed between modems! Press OK once the Bits per second is configured. You will advance to the communications window. Hyperteminal will automatically open the port.
PAGE 9
MultiLogger After Call-back Do Configuration Call-back initiates a data collection from the called computer running MultiLogger. Notification can be provided in several ways to provide reporting of the call-back events. This includes: • When using MultiLoggerDB, email messages to include specific Output Parameters defined in the database such as Quick Reports, Quick Charts or Spreadsheets can be sent.
PAGE 10
Configure the Task Name as appropriate to help identify the Task. Use the file open button to browse to the executable to run, in this case Roobrik. Enclose the executable in quotes when using command line parameters, the parameters direct Roobrik to load the mychart parameter file, then GO! and Quit. See the Roobrik User’s Guide section 2.3 for more information on the Roobrik command line parameters. Optionally additional tasks can be configured and selected using the After Task Do drop-down.
PAGE 11
MultiLogger Enable Call-Back and Agent Configuration Before activating the Agent be sure Call-Back is enabled for the ports that have dataloggers attached that you wish to receive call-back events from. For RS-232 Direct Call-Back select the COM port to be used to receive the call-back events. Check Allow Call-back and then configure the Highest Call-back Baud Rate to match the setting in the programming used for the Alarm Action.
PAGE 12
The last step when using any of the call-back selections involves activating the Agent to accept the incoming call-back requests. Click on the Agent button on the Network Configuration toolbar to view the current Agent settings. Configure the Schedule, or collection interval, to be used as the default if no call-back event is received. Hint: You cannot use ASAP or Collect Once with call-back functionality.