Old School IQ 2 systems
Posted 08 June 2005 - 11:28 AM
Posted 08 June 2005 - 02:06 PM
In the older IQ system wiring configurations, 4 pin and 5 pin DIN connectors were used on most IQ products while some used a 4 pin Buchannan connector. The DIN connectors used pins 1 and 2 with Pin 1 being the negative connection and Pin 2 the positive. Positive (pin 2) was connected to positive (pin 2) of the connector at the other end of the cable and negative (pin1) was connected to negative (pin1). Each cable connecting the devices together had a 4 pin DIN on one end and a 5 pin DIN on the other. The 4 pin DIN went to an IQ device’s output connector and the 5 pin went to the next devices input connection. If a Buchannan connector was used then the wiring was done so the ouput positive and negative fed the next devices input positive and negative and the input was fed the same way from the device before it.
Connection between the computer and the Interface was done with a straight through wired RS-232 Modem Cable not a Null-Modem cable as the Null-Modem cable had pins reversed on one end. This cable was either a db-9 to db-25 cable or a db-9 to db-9 cable depending on the age of the interface.
You will need to use the IQ for Windows 5.12 software for operation which can be downloaded from the “Downloads” section of this forum. When starting the software it will do a Roll Call (Component Discovery) if everything is connected and working the devices will show up on the “Work Place” screen after the Roll Call is completed. If the roll call came back with a “No Interface found” then there is a communication issue beteen the computer and the Interface. If it comes back with a “CTS Low” statement then we have two ways of fixing this. Give us a call for either.
Once the devices are on the Work Place screen double clicking on the component’s icon will open up a control screen, clicking on the yellow bar at the bottom will open up the window wider. Clicking on the larger yellow bar will open the window up into the tabs window were you can set up the advanced features of the device.
If you do not have the owner’s manuals for the devices they can be downloaded from our web site at:
Our Legacy web page also has an "IQ System: Trouble Shooting Guide" .pdf file from the old IQ Training School Training Manual that might be of interest. This guide has the procedures for troubleshooting an IQ 20ma current loop system.
Posted 16 June 2005 - 05:49 PM
Posted 17 June 2005 - 09:25 AM
Make sure you have a modem cable not a null modem cable. A modem cable is wired pin for pin from one connector to the next. A "No Interface found" statement means that there is no communication between the computer and the Interface.
Posted 17 June 2005 - 02:21 PM
Posted 19 June 2005 - 11:46 PM
The CTS low issue come from some computers hold CTS high all the time while others hold it low. There are two fixes for the CTS Low issue.
The fist one involves getting an RS-232 cable you don’t mind sacrificing to the cable gods. On this cable pull pin 4 out of the male end. This can be done with needle nose pliers.
If this doesn’t work open the IQ.ini file in a text editor like “Note Pad”. And add the line “IgnoreCTS=1” like displayed below. This should get rid of the CTS low