Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 TL1 (Transaction Language 1) and X.25 Interface Appendix D - 17
CTAG (Correlation
Tag)
The CTAG is a message identifier, assigned and sent by the OS with
each command, which correlates an input command with its associated
output response. Galaxy automatically copies this value into the
appropriate field of its output response to the associated input command.
GB (General
Block) and PB
(Parameter Block)
These terms include additional information in the command or output
response.
Condition Type For each alarm, this string (20 characters) tells the OS the type of alarm
condition. For example, a battery on discharge alarm could be "DC
PLANT LOW VOLTAGE." For each TL1 channel, the user must
configure the condition type for the alarm.
Service-Affecting For each alarm, the user must specify whether the alarm condition is
service-affecting or not.
Setup
Procedure for
Galaxy to
Communicate
Messages
With Operating
Systems (OSs)
Physical Setup: The Galaxy TL1 port is a RS-232 port supporting from
300 to 9600 bps communications. Find out the required type of
communications with your data network. The Galaxy can be set up to
interface with the data network to communicate with OSs in any of the
following ways:
• Direct RS-485 interface. Use the supplied RS-485 to RS-232
converters.
• Direct RS-232 interface.
• X.25 interface. Connect to the external Packet Assembler
Disassembler (PAD).
Refer to Section 3 for installation setup details.
Link Setup: Make sure a communications link is established between
Galaxy and OS. If you are using an external PAD, refer to its
documentation for installation details.
Configuration: Each alarm or equipment which must be reported to OS
via TL1 messages must be linked to one of the TL1 channels, using
T1.317 or EasyView interface to Galaxy. This may be done either via
the local RS-232 port using a terminal or via the dial-up modem port.
Refer to Section 5.
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