| Use the loop back tester. The serial
drivers PCxI, MCxI, COMxI or COMx may be used.
Configure a unit for each port to be tested. There should be no
other drivers configured. Each port will transmit a frame of random
length. This process is repeated when the entire frame is
received.
| I/O Devices
form
|
|
| Name: |
User supplied unique
name
|
| Number: |
Network wide I/O
device number
|
| Address: |
Not used
|
| Protocol: |
LOOPBACK |
| Port name: |
Use the "Port
name" from the Ports form |
Citect.ini option
[LOOPBACK]
LoopBack = 0
Set loop back to 1 if internal loop back is to be performed (make
sure this entry is deleted after running the loop back test),
otherwise a loop back connector which ties pins 2 and 3 together is
required at each port. The COMx driver does not support internal
loop back.
Size = 512
Set the maximum frame size to 'size'. The length of each frame
transmitted is random between 1 to size - 1. The default size is
512.
Special Statistics
Use "page driver" in the kernel page to look at the statistics.
Type 'v' to set to verbose mode. The following counters are
used:
- Number of characters transmitted.
- Number of frames transmitted.
- Number of characters received.
- Elapsed time in milliseconds.
- Characters received per second.
- Start time in milliseconds.
- Total number of errors (Should be 0)
- Error code of last error.
Files
- LOOPBACK.DLL Loop Back Driver for windows
Error Code
6 The received character is not the same as the
character transmitted.
|
