Setting A Bit Of A Register

[ChantalPlusPlus]

Hi Everyone

 

Can someone please help me? This might be a silly question but I am very new to DaqFactory and I've only done some very basic things.

 

Register in my header file "Modbus.h":

 

//Code

 

#define h_STATUS0                                0

        #define S_ReadyToStart             0x0001

        #define S_PreStart                      0x0002

        #define S_Run                             0x0004

        #define S_Cooling                       0x0080

        #define S_Short                          0x0010

        #define S_EFL                            0x0020

        #define S_Stop                           0x0040

        #define S_OverVoltage              0x0080

        #define S_UnderVoltage            0x0100

        #define S_VoltageUnb               0x0200

        #define S_OverCurrent              0x0400

        #define S_UnderCurrent            0x0800

        #define S_CurrentUnb               0x1000

        #define S_EarthFault                 0x2000

        #define S_PhaseLoss                0x4000

        #define S_PhaseRotation          0x8000

 

//End of Code

 

So I have a holding register (h_STATUS0), that contains bits, and each bit represents a "status", which on my output is an LED.

 

If I set up a channel in DaqFactory "wh_STATUS0, channel=0", and I want to use the channel but set only "S_ReadyToStart" (0x0001) to "1", how do I do this?

 

I hope this question makes sense and that someone can help me:)
 

Thanks in advance!

 

 

[AzeoTech]

Set the channel with Timing so you are reading the current status value.  Then, if you wanted to, say, enable S_PhaseLoss you'd do:

 

wh_status0 = setBit(wh_status0[0], 14)

 

or to turn off CurrentUnb:

 

wh_status0 = clearBit(wh_status0[0], 12)

 

Note that the 14 and 12 are bit numbers, numbered from 0.  So in your list, readyToStart is bit 0, prestart is bit 1, etc from 0 to 15 right down the list (you have a type of cooling, it should be 0x0008)