User's Manual

14 Universal Metering Transponder for kV2c™ Meter User Guide
Functional Description of the UMT-C-KV
Two-way addresses are comprised of three fields:
• Function - operational application, e.g. outage detection. Valid range 1-63.
• Group - quantity of RCEs addressed by group. Valid range 1-262,143.
• Unit - further subdivision of Group field and specific to channeling scheme.
Valid range 1-255.
Certain restrictions are placed on the assignment of multiple addresses.
Specifically, no more than one two-way address slot in an individual UMT-C-KV
can contain the same function and group fields.
A two-way address is written to a specific address slot using a ‘Write RCE
Registers’, ‘Bulk Assign Two-way Addresses’, or ‘Initialize RCE’ command. In
order to assign a new two-way address, the contents of the address slot are simply
overwritten. A two-way address is de-assigned by writing the slot to zero.
TWACS-10 and TWACS-20 Communication Protocols
TWACS-10 and TWACS-20 communication protocols establish the method and
form that can be used to address Remote Communications Equipment. TWACS-10
and TWACS-20 capable RCEs can be addressed using TWACS-10 modes.
However, TWACS-10-only capable RCEs can not be addressed using TWACS-20
protocol modes . TWACS-10 and TWACS-20 addressing protocols are supported
by the UMT-C-KV.
Following assignment of a two-way address to the UMT-C-KV, subsequent
commands may utilize the following TWACS-10 or TWACS-20 address modes:
TWACS-10 Addressing Modes
• Serial Number (Mode 1), addressing a single module, with or without a
response
• Two-way unit (Mode 2), addressing a single module, with or without a
response
• Two-way group (Mode 3), addressing a group of up to 256 modules, with or
without a response
• One-way functional (Mode 4), addressing an unlimited number of modules,
with no response
TWACS-20 Addressing Modes
Includes all of the TWACS-10 Addressing Modes, plus the following:
• Serial Number Set (Mode 7.7), addressing ad-hoc sets with or without
response, concurrent feeders
• Function/Group/Unit Set, (Mode 7.8)addressing sets of up to 64 non
sequential units with or without response, concurrent feeders
• Function/Group Set (Mode 7.9), addressing up to 8 groups of 256 units each,
with or without response, concurrent feeders