1A hardware is actually dC.OP (non-isolated DC output). But when i use et24xx to control the instrument, everything is fine except this parameter. It seems that it could not be changed either from the front panel or from the VI.
The instrument could not work properly. There is no output at all when the setpoint value is higher than process value. On the other hand, OP1 light is on when the setpoint value is less than PV. It is quite wierd!!!!
I could not figure it out!
