WinOCPT Technical Support

Hydraulic and Chuck Switch Trip Points

WinOCPT expects the A/D output for the hydraulic and chuck switches to fall into specific ranges. Some users have reversed wiring on their chuck switches which prevents WinOCPT from collecting data. Here are the trip points and polarities for both switches:

Sensor	Output	Action
Chuck Switch	less than 600	engaged
Chuck Switch	greater than 600	disengaged
Hydraulic Switch	less than 0	no flow
Hydraulic Switch	greater than 0	flow

Also, when the String Pot wire is pulled out of the box, the A/D reading should increase.

BLH LCP-10 Setup:

WinOCPT can automatically read any BLH LCP-10 (rev. 2.2) that has been modified for full-duplex RS-232 communications. Setup must be correct, however, so read the manual and perform the following actions:

Execute the Init routine to reset all parameters.
Set the baud rate to 9600
Set the device address to 0.
Select the continuous output mode
Select even parity (enabling parity, as well)
Connect to COM1-COM4 using a null-modem cable.

The first time you execute Calibrate_"Geological Settings" set Edit_Options to match the serial port connected to the weight processor. If you cannot get the LCP-10 to function properly (or do not have a modified unit) you can set the manual weight mode in the Options dialog.

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