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4092A Operations and Maintenance Manual 11
3: Monitoring the 4092A
3.1 Accessing the System
You access the 4092A system remotely by connecting to its Command-And-Response (CNR) Port
through the Ethernet connection. The CNR port (Port 10001), which uses TCP/IP, lets you input
commands, displays results of the commands, and publishes alarms as they occur.
When you Telnet to the CNR port, the system does not display a prompt.
3.2 Checking System Information
3.2.1 Checking Status and Alarms
The system can report status and alarms that occurred since the last status check.
To check system status:
Type: S
You do not need to type a carriage return or line feed.
The system returns Sabcde,fghij\r\n where
abcde is current status.
fghij is latched alarms and changed status since the last status request.
Both abcde and fghij are hexadecimal numbers, with each bit position representing one
output. LSB (farthest right) is output 1. MSB is the input. Bits 0–12 are latched alarms.
Bits 13–19 are change in status bits.
Latched alarms remain active in the current status field and latched status field until the
problem is corrected. Changed status bits are cleared upon next status request.
Example: S0A001,00001
This example shows that input B was selected using the front panel toggle switch, channel B is
active, and output 1 had a failure since the last status request.