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D5000M
Modbus Data Acquisition Systems (DAS)
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| The D5000M
Modbus data
acquisition (DAS) uses the Modbus RTU protocol for communication. The D5000M
are complete four-channel data acquisition systems that are well suited to
applications such as SCADA, data monitoring, data loggers, PLC's, process
controllers and instrumentation. The modules convert an analog input signal to
engineering units and transmit in ASCII data format to any host or PLC with
RS485 or RS232 serial ports. The D5000M Modbus DAS series analog signal input
types include Voltage, Current and Temperature.
The
D5000M DAS series converts the digital signal data into engineering units using
look-up tables. The resultant data is stored in a memory buffer. The module's
ADC continuously converts data at the rate of 8 conversions per second and
stores the latest result in the buffer. Using
RS485 up to 247 Modbus DAS modules may be linked to an RS485 port or PLC.
Since Modbus protocol does not support echoing, D5000M RS232 modules may
not be daisey-chained. This limits you to one module per RS232 serial
port. The
single analog input D5000M DAS series provides an isolated 15-bit
measurement ADC and discrete digital I/O bits for controlling solid state
relays or sensing contact closures. DIN-100
Modbus series are low cost single channel modules that are DIN rail
mountable. |
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