Campbell Hausfeld Serial I/O Interface SDM-SIO4 - Manual (Page 39)

Section 5. Programming the Datalogger
5-9
Second Value Returned
CTS status (0=CTS low, 1=CTS high)
| DSR status (0=DSR low, 1=DSR high)
| | RI status (see below)
| | | DCD status (0=DCD low, 1=DCD high)
| | | |
x x x x
For the RI (Ring Indicator):
0 = no trailing edge seen since last read
1 = trailing edge seen since last read
Third Value Returned
Framing errors
| | Overrun errors
| | | |
x x x x
Framing errors is a count from 0-99. This count shows how many times there has
been a receive error, caused by a character corruption or incorrect set-up.
Overrun errors is a count from 0-99. This count shows how many times characters
have been lost due to data being sent too quickly for the SDM-SIO4 to process the
data.
Fourth Value Returned
NOT USED - SET TO ZERO
| | Line break errors
| | | |
x x x x
Line break errors is a count from 0-99. This count shows how many times the line
has been broken or disconnected.
First Command Option — Reset Error Counters
When command 1026 is specified in parameter 4 of Instruction 113, this
additional option can be used (parameter 5 of Instruction 113) to force the error
counters to be reset to zero.
This means that command 1026 requests data from the SDM-SIO4 and can also be
used to send these reset commands to the SDM-SIO4.
The command to reset the error counters has no effect on a port if
the command line is active.
Break reset
| Framing reset
| | Overrun reset
| | | Parity reset
| | | |
x x x x
NOTE