Rockwell Automation 6008-SI IBM PC I/O SCNNR 6008-SI User Manual

Page 121

Chapter 10

User Diagnostic Program

10-9

Timeout

command: Unlike the other commands in this section, the T command

doesn’t cause a request to be issued to the scanner. Instead, this command
sets the diagnostic program’s own timeout interval for management
requests. The program asks you:

MR timeout in 55-msec units:

Enter a decimal number. (A second is about 18.2 units; scan-list requests,
which are the slowest, can take up to 12 units.)

If the scanner doesn’t complete a given request (or respond to an interrupt
from the host) in the time interval you specified, the host abandons the
operation and reports an error on your screen.

When the diagnostic program began executing, the timeout interval was
automatically set to 18 units, unless you used the

option on the

command line.

Block Transfers

You perform block transfers from the main command prompt by typing

The program then asks you for a letter

for a single BT,

for multiple

BTs, or

for continuous BTs.

You can bypass the second prompt by specifying the subcommand on the
same line as the

; for example,

BTR

Single block transfers

For a single BT read or write, the program asks for the module slot
address:

rack, group, slot as three octal digits:

For example, enter 421 for rack 4, group 2, high slot. The program also
wants to know how many words of data to transfer:

data length in words:

If you change your mind about doing the block transfer, simply answer
either of the above prompts with an X.

For a BT write, the program also prompts for the data, one word at a time,
beginning like this:

data word 00/00(hex) (enter in hex, X to cancel):