The Read Status and Write Status fields return error codes to the tags you specified for those fields. These error codes can be standard or customized for each driver. For a description of customized error codes, consult the documentation for the driver.

The following are standard error codes, which are always negative values:

• 0=OK
• -1=Invalid serial port
• -2=Invalid baud rate
• -3=Invalid number of bits
• -4=Invalid number of stop bits
• -5=Invalid parity
• -6=Invalid irq
• -7=Serial port already in use
• -8=Invalid buffer size
• -9=Memory not enough
• -10=Tx buffer empty
• -11=Tx buffer full
• -12=Rx buffer empty
• -13=Rx buffer full
• -14=Timeout waiting CTS
• -15=Timeout waiting start a message
• -16=Timeout waiting a message to finish
• -17=Timeout between rx char
• -18=Timeout between tx char
• -19=No carrier detected
• -20=No DSR detected
• -21=Could not find a 8250 in address
• -22=Tx line is busy
• -23=User abort
• -24=Function not supported
• -25=Overrun
• -26=Parity
• -27=Overrun and parity
• -28=Framing
• -29=Framing and overrun
• -30=Framing and parity
• -31=Framing, overrun and parity
• -32=Timeout waiting a tx message to finish

The UNICOMM.MSG file in the […]InduSoft Web Studio v7.1Bin directory also contains descriptions of the standard error codes.

The DriverName.MSG file in the […]InduSoft Web Studio v7.1Drv directory contains descriptions of the customized error codes for each driver.