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