Data Flow Systems TCU800, Инструкция по установке и эксплуатации

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O p e r a t i n g P r o c e d u r e s
Low Alarm
The voltage the unit can drop to before the alarm is triggered. The low alarm can
be set in 1 V increments between 151 and 300 for a 240 VAC phase monitor and
between 0 and 600 for a 480 VAC phase monitor.
High Alarm
The voltage the unit can rise to before the alarm is triggered. The high alarm can
be set in 1 V increments between 151 and 300 for a 240 VAC phase monitor and
between 0 and 600 for a 480 VAC phase monitor.
Edit AB/AC Setting
Introduces screen allowing edits to AB Engineering Low and High, as well as AB
Raw Low and High.
Options under the Modbus Menu are used to configure
additional Modbus devices connected to the TCU800.
Protocol
After all of the information for Modbus slave devices has been entered, enter the
protocol, bit number, and parity for the devices being polled by the TCU.
Baud Rate
Use the numbered keys to enter the baud rate. Valid rates are 1200, 2400, 4800, or
9600. Note that if you enter a rate other than those listed here, then the TCU will
resolve the baud rate to the closest valid value.
H Address
ModX Adr (address) is the Modbus device ID/node and the first register for the
range of registers being added to the current module. The ID and starting register
are separated with a dot. For example, ModH Adr would be 1.10001 when adding
digital inputs to device 1, module H. Valid range for Modbus device IDs is 1-250;
valid range for starting registers is 0001 to 49999.
H Length
ModX Lth (length) is the number of registers being added to the current module.
Valid length values are:
• 1-12 for digital status registers
• 1-8 for digital control registers
• 1-4 for analog status registers
• 1-4 for analog control registers
For example, ModH Lth would be 8 when adding 8 digital inputs to module H.
For Analog registers, the Length field requires an additional value that represents
resolution (a bit mask value that represents the number of bits the TCU is emulating
when it communicates with Modbus devices). For analog registers, the length and
the bit mask value are separated with a dot. For example, 4.15 for a TCU querying
for 4 analog registers with a bit masking value of 15 (full-scale output of 32760).
Modbus