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| MOD-MUX |
MMTCP8TC ISO
The module uses differential inputs to reduce effects of electrical noise and
mains pickup. The thermocouple inputs are isolated from the logic and from
each other. This module is operated in an identical way to the PM8TC module
and is fully interchangeable. The thermocouple voltage is read by the module
circuitry, linearised and converted to degrees Centigrade. No ranging is
required as the module covers the full range as indicated in the TC table.
The value that is read from the Modbus register is the actual temperature in
degrees centigrade to 0.1°C resolution.
ie: a value of 3451 corresponds to a temperature of 345.1°C.
The thermocouple type is setup by writing a value to the TC Type register.
The value is obtained from the table below. For example to select type K
thermocouples, the value "2" must be written to the TC Type register.
All 8 thermocouple inputs adopt the same TC type.
The DIP switch 9 is used to select upscale or downscale burnout. A value of
32768 is used to indicate upscale burnout and a value of -32767 is used to
indicate downscale burnout.
The module has built in Cold Junction Compensation. Use must be made of
the correct thermocouple extension wire to avoid reading errors.
The thermocouple module can also be configured for a 0 - 50mV input range.
The TC Type register must be set to 9 for this option. The value in the register
which is read back over the network is 0 - 50,000.
mains pickup. The thermocouple inputs are isolated from the logic and from
each other. This module is operated in an identical way to the PM8TC module
and is fully interchangeable. The thermocouple voltage is read by the module
circuitry, linearised and converted to degrees Centigrade. No ranging is
required as the module covers the full range as indicated in the TC table.
The value that is read from the Modbus register is the actual temperature in
degrees centigrade to 0.1°C resolution.
ie: a value of 3451 corresponds to a temperature of 345.1°C.
The thermocouple type is setup by writing a value to the TC Type register.
The value is obtained from the table below. For example to select type K
thermocouples, the value "2" must be written to the TC Type register.
All 8 thermocouple inputs adopt the same TC type.
The DIP switch 9 is used to select upscale or downscale burnout. A value of
32768 is used to indicate upscale burnout and a value of -32767 is used to
indicate downscale burnout.
The module has built in Cold Junction Compensation. Use must be made of
the correct thermocouple extension wire to avoid reading errors.
The thermocouple module can also be configured for a 0 - 50mV input range.
The TC Type register must be set to 9 for this option. The value in the register
which is read back over the network is 0 - 50,000.
Innovative Evolution