INVENTIA MT-101, Руководство пользователя

Страница: 16 / 165

13
4.3. Internal resources
4.3.1. Registers
MT-101 Telemetry module has in it's internal resources 16 bit input registers and 16 bit
internal registers. Remote access to these areas is possible using standard Modbus
commands.
Internal Registers are not reset at power off.
Input Registers are reset at power on.
Module's 16 bit registers store unsigned values in range 0-65535. In order to increase the
range of stored values, pairs of 16 bit registers were reserved to create 32 bit registers
storing signed values for use in user/defined internal program.
4.3.2. Virtual registers
MT-101 Telemetry module feature 16 bit Virtual Registers. They reflect input (VREG_BIx)
and output (VREG_BOx) bit spaces. Using virtual registers gives easy access to bit groups
and copying data between bit spaces and registers. Access to registers is possible through
module's internal program using standard programming functions described in the chapter
Programming.
4.3.3. Clocks
MT-101 Telemetry Module is equipped with 4 programmatic clocks divided in two groups
with different functionalities.
2 programmable
Asynchronous clocks TMR1, TMR2, enable cyclical time measuring for
up to 100 days (8 640 000 s) and 2 programmable Synchronous clocks TMR3, TMR4,
enable cyclical time measuring from 1 min to 24 h with synchronization with module z RTC
clock.
Properly configured clock counts the time setting after each completed period, for one
program cycle, a flag in binary inputs space (respective
TMR1, TMR2, TMR3, TMR4 ). These
flags can be used in internal controlling program or for triggering transmission on event.
4.3.4. Counters
Each of MT-101 module's inputs/outputs is capable of counting pulses and storing the
value in 32 bit counter with capacity of 2 147 483 647 (31 bits + counting direction bit)
events. The counter can count „up” or „down”, and the range can be freely defined in range
of 1 to 2 147 483 647.
Counting "up" means that the counter value is increased by 1 for each detected pulse and
after reaching the value set as "counter length-1" is reset to "0". Counting "down"
diminishes the counter value by 1 for each detected pulse and after reaching the value set
as "counter length-1" is reset to "0" to resume the value of defined maximum.
Crossing the value of counter length sets
Counter alarm flag for respective input. The flag
can be used in the internal controlling program or for triggering transmission on event.
4.3.5. Logger
MT-101 Telemetry Module is equipped with internal Recorder , storing state changes on
binary inputs/outputs and on analogue inputs. The Recorder has a volume of 140 data
records. New records are written to memory after change of state on binary inputs/outputs
or at crossing of dead band defined for analogue inputs. Records are stamped with time