Harris Intraplex STL-160 Series Installation & Operation Manual page 123

5 – Remote Control
Determine Alert/Alarm Status of Multiplexer
You can determine the overall alarm and alert status of an ACS-160 Series multiplexer by issuing
a STATUS? command to its TERM or DI-A module. For example, to determine the overall status of
an ACS-163 terminal multiplexer, issue a command of the form:
<Address>:TERM:STATUS?:;
The response to this command shows the status of the multiplexer's T1 interface and indicates
whether any channel modules are in an alarm or alert state. Similarly, to determine the overall
status of an ACS-165 drop and insert multiplexer, issue a command of the form:
<Address>:DI-A:STATUS?:;
The response to this command shows the status of the A-direction T1 interface - that is, the T1
interface on the DI-A module - and indicates whether any channel modules are in an alarm or
alert state. To determine the T1 interface status on the DI-B module in an ACS-165 drop and
insert multiplexer, issue a command of the form:
<Address>:DI-B:STATUS?:;
The response to this command shows the status of the B-direction T1 interface and indicates
whether there is an alert or alarm condition in the shelf. However, since only the DI-A module in a
drop and insert multiplexer relays ISiCL commands to and from the channel modules in the shelf,
the response to a DI-B STATUS? command does not indicate which channel modules, if any, are
generating an alarm. If an ACS-160 Series multiplexer is not in an alarm or alert state, it responds
in this way to a STATUS? command issued to its TERM or DI-A module:
* OK
SHELF NORMAL;
This response indicates all of these conditions:
• No power, timing, or T1 alarms or alerts are detected.
• The ACO switch is not on.
• No channel module on either the main or expansion shelf (if provided) is in an alarm or alert
state.
This "SHELF NORMAL" response may also include the line "RECEIVING ALL ONES" if the far end
multiplexer is idle. If, however, the queried multiplexer is in an alarm or alert state, it generates a
response with this format:
* OK
> > > ALARM (or ALERT) AT SHELF < < <
(message describing the alarm or alert condition[s]);
Note that the "* OK" in the first line of the response indicates that the received command was
valid, not that the multiplexer is "all right." For example, if a STATUS? command is issued to a
CM-5RB module that is receiving a T1 Yellow Alarm signal, it responds
* OK
> > > ALERT AT SHELF < < <
RECEIVING YELLOW ALARM;
Or, if a STATUS? command is issued to the TERM or DI-A module in an ACS-160 Series
multiplexer in which the channel module with sub-address 5 is in an alarm state, it responds
* OK
> > > ALERT AT SHELF < < <
ALARM AT C05;
If more than one channel module is in an alert or alarm state, the message gives the total number
of modules having problems, rather than their individual sub-addresses (for example, "ALARM AT
3 CHANNEL CARDS"). Each type of channel module has its own set of conditions that cause it to
enter an alarm (or alert) state (Section 7.5 – Channel Module Remote Access).
Harris Corporation
Intraplex Products
ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
5-25