5.0 Operation
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5.1.2.1.8 NACK from the Receiver
If the Console software receives a NACK while sending any command from the receiver, it will re-send the command up to four times. After the fourth
attempt, the Console software will generate an error in the command log to indicate that the command failed. If at any time in the sequence the system
receives an ACK to the message the system shall accept this and clear any counters for the previous failed attempts.
Depending on the reason the application software should generate different messages. It should only generate this message after the 4th re-try:
Reason=”Invalid Command” – This should generate a message that says,” Invalid Command”
Reason=”Corrupt” – This should generate a message that says, “Unable to read command”
Reason=”LC Absent” – This should generate a message that says, “Line card not present”
5.1.2.1.9 No Response from the Console software
If the Console software doesn’t respond to a command from the receiver, the receiver will re-send the command up to 4 times with an inter-attempt time
of four seconds. After the 4th attempt has timed out the receiver will check to see if there is any other commands being sent or ACK’ed/responded to. If
after this last attempt the Application software still doesn’t provide an ACK/Response, the SG-CPM5 will gracefully close the visual verification port.
If at any time in the sequence the system receives an ACK to the message the system shall accept this and clear any counters for the previous failed
attempts.
If the Console connection is closed, the receiver will gracefully close the TCP/IP socket connection.
5.1.2.1.10 No Response from the Receiver
SG-DRL5-IP – Visual Verification
When the SG-DRL5-IP doesn’t respond to a command from the application software, the application will retransmit the command after four seconds up
to four additional times.
SG-CPM5 - SG Visual commands
When the SG-CPM5 doesn’t respond to commands from the application software the application software will retransmit the command after 2 seconds
up to 4 additional times. When the SG-CPM5/SG-DRL5 is not responding to the output transmissions, the SG-CPM5 will generate a trouble.
5.1.2.2 Advanced Output Protocol Specification
Please refer to the Advanced Output Protocol for a detailed explanation of each of the commands
5.2 Printer
5.2.1 Introduction
The SG-CPM5 has 2 printer ports, one for TCP/IP and one for Serial. The SG-System 5 outputs internal and external events to these prnter ports
5.2.2 TCP/IP
The TCP/IP printer port is port 1027 and is connected via the Ethernet port on the back of the SG-CPM5 . It can be connected using the Console or a
3rd Party Printer Application. There needs to be a Heartbeat every 25 seconds generated by the Application to keep the TCP/IP port alive.
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Summary of Contents for SG-System 5
Page 69: ...6 0 Options 69 FIGURE 6 2 Flow Diagram for Fallback Mode 1 SG System 5 Operating Manual ...
Page 70: ...6 0 Options 70 FIGURE 6 3 Flow Diagram for All Mode 2 SG System 5 Operating Manual ...
Page 71: ...6 0 Options 71 FIGURE 6 4 Flow Diagram for IP Fallback Mode 3 SG System 5 Operating Manual ...
