AddMe III features 18 analog/universal inputs
with changeable network variable types. The universal inputs are
context sensitive. When confi gured as an analog input, the continuously
self-calibrating sigma-delta converter produces 15-bit resolution
with high noise immunity. When confi gured as a discrete
input, the converter switches to 10-bit resolution at >128 samples
per second for fast response.
Network variables for the analog I/O points may be confi gured for
any scalar LonMark SNVT, fi xed point or fl oating point. In addition,
analog (universal) inputs may be confi gured to SNVT_switch
with the on threshold programmed via the translation tables. Additional
56-point linearization tables are pre-programmed to convert
3K, 10K or 20K thermistors to SNVT_temp, SNVT_temp_p or
SNVT_temp_f.
The standard LonMark Object plug-in, or LonMaker browser, can
be used to do all necessary confi guration. Send times for network
traffi c throttling and heartbeat, send on delta, object override, etc.,
are all supported per LonMark standards.
AddMe III includes an RS-485 serial communications port in
addition to the LonWorks TP/FT-10 network port. AddMe III includes
a Modbus RTU Master. Up to 27 registers or objects may
be interfaced, each mapped to a bindable network variable. There
are 7 network input variables for writing Modbus registers, and 20
network output variables for reading Modbus registers.
