= MnBdRequest =
Sends a request to the specified main board device.

{{{
int MnBdRequest(int nDev, int nReq, int nWaitAck);
}}}

== Parameters == 

 * nDev - main board device number
 * nReq - request code
 * nWaitAck - WAIT_ACK to wait for result, or NO_WAIT_ACK to continue processing

== Return Value ==

 * If WAIT_ACK specified returns OK (MNBD_REQ_ACK_RCVD) if successful, MNBD_REQ_NACK_RCVD if error response, MNBD_REQ_TIMEOUT if no response (MnBdRequest retries up to five times).

== Remarks ==


== Examples ==

{{{
if(MnBdRequest(1, MNBD_REQ_ZERO_SCALE, WAIT_ACK) != OK)
{
    DisplayText(0, 0, "Error zeroing scale");
}
}}}
The above MnBdRequest is equivalent to ''ZeroScale(1)''.

== See Also ==

 * [wiki:MnBdRead MnBdRead]
 * [wiki:MnBdOpen MnBdOpen]