1747-PIC Device diagnostics

Diagnostic counters are available by right-clicking the processor station in the
RSWho
window. Driver diagnostics are found under the General
, DH485
, Kernel Driver
, and Performance
tabs in the tabbed dialog. Driver diagnostics are modeless; therefore, they can remain on the desktop if you minimize RSLinx Classic. The following is the list of diagnostic counters shown and the definition of each.

General Tab
Packets Sent	RSLinx Classic packets sent to kernel driver.
Reply Packets Received	RSLinx Classic packets received from kernel driver.
Unsolicited Messages Sent	Unsolicited replies sent to kernel driver.
Unsolicited Messages Received	Unsolicited commands received from kernel driver.
Total Bad Packets Received	Bad/Unsupported packets received from kernel driver.
Unmatched Reply Packets	A packet has been received from the kernel driver that the user-mode driver does not have listed as pending. This can happen when RSLinx Classic cancels a packet but the kernel driver already sent it. When the reply packet is given to the user-mode driver, it no longer has the packet pending as it was canceled.
Bad Packets	Bad/Unsupported packet received from RSLinx Classic engine.
Timeouts	Packets timed out by RSLinx Classic.
Communication Errors with Kernel Drivers	Error communicating between user-mode PIC driver and kernel-mode PIC driver.
Packets Canceled	Packets canceled by RSLinx Classic.
Packets in Queue	Packets in the user-mode queue waiting to be sent to the kernel PIC driver.
Unsolicited Packets in Queue	Unsolicited packets in the user-mode queue waiting to be sent to the kernel PIC driver.

DH485 tab
Packets Sent	Packets that have actually been sent on the highway.
Command Packets Received	Diagnostic command packets that have been received from the highway.
Reply Packets Received	Reply packets received from the highway.
Unsolicited Messages Sent	Unsolicited messages sent to the highway.
Unsolicited Messages Received	Unsolicited messages received from the highway.
Total Bad Packets Received	Bad/Unsupported packets received from the highway. Errors here may indicate that the computer is not able to keep up with the speed requirements of the PIC driver.
Packet Retries	Packet send was retried because an ACK was not received in response to a command.
Maximum Retry Count Exceeded	The command packet failed to receive an ACK twice and was failed.
NAKs Received	A Negative Acknowledge (NAK) was received in response to sending a packet.
NAKs Sent	A NAK was sent because the packet was not valid or the driver did not have a receive buffer available.
Bad Control Fields	A packet was received from the highway that had an invalid control field.
Claim Tokens Sent	A Claim Token packet was issued due to no highway traffic or a lost token.
Claim Tokens Received	A Claim Token packet has been received from another station on the highway. This is usually the result of the token being lost.

Kernel Driver tab
Packets From Host	Packets received from user-mode RSLinx Classic driver.
Canceled Packets	A read or write request was canceled by the IO Manager.
No Receive Buffer Available	A character was received when no receive buffer was available. This is a critical error that causes packets to be lost if this increments.
Buffers in FREE List	Buffers available to use for commands or replies. If this number reaches zero, you will receive 'No Receive Buffer Available' errors. This is also a critical error.
Buffers in RESPONSE List	Reply packets waiting to be sent on the wire.
Buffers in COMMAND List	Command packets waiting to be sent on the wire.
Buffers in RECEIVE List	Packets waiting to be sent to user-mode PIC driver.

Performance tab
Sent Packets/Second	Total packets sent (solicited and unsolicited) per second by user-mode driver.
Received Packets/Second	Total packets received (solicited and unsolicited) per second by user-mode driver.

Available drivers

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