Multiple 4100-iSICs can be used in a system that incorporates a single 4100-Base Station or other iSIC telemetry. Doing so is as simple as assigning each device with a unique address. Every 4100-iSIC must have an address that is different from all the other radios in the monitoring network. iChart software will then use these addresses to communicate to the iSIC and the sensors that are physically connected to it. By default, every iSIC has an address of “1”. (Note: 4200-iSIC’s will have address 250, which should not be changed)

Connect one end of the RS-232 Interface Cable (supplied) to the PC’s serial port. Plug the other end of the cable into the DB9 connector located inside the iSIC. Apply power to the 4100-iSIC. If AC power will be used to power the system, connect the red and black battery leads inside the 4100 or connect the A11 Battery Float Charger.

Open iChart and select Advanced | Terminal. Connect the data logger to a COM port on the computer and then select that COM port in the dialog box and direct connect as the connection type. Click connect and a white window should appear.

  • Power the iSIC (or cycle power by removing both fuses)
  • When NexSens 4100-iSIC appears in the Terminal, type “Esc-2-3-2”
  • Look for a message that ends with %232. If one doesn’t appear, re-cycle power and repeat.
  • Once %232 is the last line in the Terminal, close the Terminal

Open iChart and select Advanced | iSIC | iSIC from the file menu.



Figure 1: Advanced | iSIC | iSIC


This will open the iSIC Setup window. It should be noted that the 4100-iSIC cannot communicate directly to a computer unless specified to do so in the iSIC Setup menu, as its
default is to communicate via spread spectrum radio instead of direct connect to PC.

Check the COM Port field. If the RS-232 cable connecting the iSIC to the computer is located on a port other than COM1, click on PC COM Port and select the correct COM port. All other configuration settings can remain as 9600 baud N81.

Next select Direct connect from the Connection drop-down menu if it is not already selected. Finally the iSIC Address field can be left at the default of “0”.

Once the configuration has been set correctly, click on the Connect button. Once iChart has opened the COM port, the Connect button will now say Disconnect. If a message appears
saying “failed to open port”, make sure no other programs are using the COM port. Also, if an iChart program is open, it may be interrogating instruments connected to that port.

Click on the General tab and iChart will read the iSIC configuration information. After it has done so, make sure the firmware, iSIC time, and main battery voltage fields are present. Check the Change Address box and enter a new value for the iSIC Address. It is suggested that addresses for 4100 radios begin at 10 and continue in increments of one. For example,
radios will be addressed as 10, 11, 12… When a new address has been entered, click Apply.


General Tab

Figure 2: iSIC Setup window, General tab

iChart will pop up a message stating the change was successful. Go back to the Connection tab and click Disconnect. After disconnecting and closing the iSIC Setup dialog box, cycle power once more by again removing the fuses. Repeat until all radios are programmed with addresses. Again, it is suggested that addresses start at 10 and continue at increments of one until all devices are configured. Be sure to mark each radio with its programmed address. This address will be used when adding sensors connected to it to iChart.

REV: 13G12

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