Chapter1 Overview - Mitsubishi MELSEC-Q Series User Manual

1
OVERVIEW
CHAPTER1
This user's manual provides the specifications, handling instructions, programming
procedures and other information of the Q68TD-G-H01 channel isolated thermocouple
input module (referred to as the Q68TD-G-H01), which is designed to use with the
MELSEC-Q series CPU module (referred to as the programmable controller CPU).
The Q68TD-G-H01 is a module designed to convert thermocouple input values from
outside the programmable controller into 16-bit signed binary measured temperature
values and 16-bit signed binary scaling values (ratios).
Programmable Programmable Programmable Programmable Programmable
controller CPU controller CPU controller CPU controller CPU controller CPU
TO TO TO TO TO
instruction instruction instruction instruction instruction
FROM FROM FROM FROM FROM
instruction instruction instruction instruction instruction
1
- 1
OVERVIEW
(Buffer memory) (Buffer memory) (Buffer memory) (Buffer memory) (Buffer memory)
Initial setting Initial setting Initial setting Initial setting Initial setting
Set data Set data Set data Set data Set data
Measured Measured Measured Measured Measured
temperature value temperature value temperature value temperature value temperature value
Measured Measured Measured Measured Measured
Scaling value Scaling value Scaling value Scaling value Scaling value
temperature value, temperature value, temperature value, temperature value, temperature value,
scaling value scaling value scaling value scaling value scaling value
reading reading reading reading reading
Measured Measured Measured Measured Measured
temperature value temperature value temperature value temperature value temperature value
Scaling value Scaling value Scaling value Scaling value Scaling value
* Refer to Section 3.4.15 for details of the scaling values.
Q68TD-G-H01
Cold junction Cold junction Cold junction Cold junction Cold junction
temperature temperature temperature temperature temperature
compensation compensation compensation compensation compensation
channel channel channel channel channel
Channel 1 Channel 1 Channel 1 Channel 1 Channel 1
Channel 8 Channel 8 Channel 8 Channel 8 Channel 8
Resistance temperature Resistance temperature Resistance temperature Resistance temperature Resistance temperature
detector input detector input detector input detector input detector input
(by cold junction temperature (by cold junction temperature (by cold junction temperature (by cold junction temperature (by cold junction temperature
compensation resistor (RTD)) compensation resistor (RTD)) compensation resistor (RTD)) compensation resistor (RTD)) compensation resistor (RTD))
Thermocouple input Thermocouple input Thermocouple input Thermocouple input Thermocouple input
Thermocouple input Thermocouple input Thermocouple input Thermocouple input Thermocouple input