Chapter 6
Reporting KTx Scanner Status
6-2
The
operating_status
word in the dual port offers the host a summary of
scanner operation. By periodically polling
operating_status
, the host can
determine if any errors have occurred on the remote I/O link or in the
KTx-host interface. This table defines the operating status word.
Bit #
Mnemonic
Description
0
program_mode
When bit is set, scanner is in Program mode.
1
test_mode
When bit is set, scanner is in Test mode.
2
run_mode
When bit is set, scanner is in Run mode.
3
debug_mode
Reserved for Allen-Bradley use only.
4
unsolicited_bt
Unsolicited BT request received.
5
bt_pending
BT in progress.
6
fault_exists
At least one adapter is faulted.
7
fault_changed
A faulted adapter went back on line.
8
unsolicited_bt_read_reply
An adapter replied to what it thought was a BT
read command, but was actually a different type
of command.
9
unsolicited_bt_write_reply
An adapter replied to what it thought was a BT
write command, but was actually a different type
of command.
10
confirmation_queue_full
Confirmation queue is full/overflowed.
11
unknown_interrupt_type
Host sent unknown interrupt type.
12
host_dead
Scanner declared host dead.
13
cos_overrun
Host is not servicing COS interrupts.
14-15
undefined
Operating Status Word
