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| MOD-MUX |
MM8TC
The module uses differential inputs to reduce effects of electrical noise
and mains pickup. The thermocoupleinputs are isolated from the logic. If
inter channel isolation is required then the PM8TCISO should be and
mains pickup. The thermocoupleinputs are isolated from the logic. If and
converted to degrees Centigrade. No ranging is required as the inter
channel isolation is required then the PM8TCISO should be module
covers the full range as indicated in the table of TC types. The used.The
thermocouple voltage is read by the modulecircuitry,linearised 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.
Note: As there is no inter-channel isolation, isolated thermocouples must
be used in order to
prevent ground loops and reading errors.
and mains pickup. The thermocoupleinputs are isolated from the logic. If
inter channel isolation is required then the PM8TCISO should be and
mains pickup. The thermocoupleinputs are isolated from the logic. If and
converted to degrees Centigrade. No ranging is required as the inter
channel isolation is required then the PM8TCISO should be module
covers the full range as indicated in the table of TC types. The used.The
thermocouple voltage is read by the modulecircuitry,linearised 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.
Note: As there is no inter-channel isolation, isolated thermocouples must
be used in order to
prevent ground loops and reading errors.
Innovative Evolution