Overview; Section 6.1.1, 6.2.2, Section 8 - Mitsubishi q64rd User Manual

1 OVERVIEW

1 OVERVIEW
This user's manual provides the specifications, handling instructions, programming
procedures and other information of the Q64RD platinum RTD (Resistance
Temperature Detector) input module and the Q64RD-G channel isolated RTD input
module (hereinafter referred to as the Q64RD and Q64RD-G), which are designed to
use together with the MELSEC-Q series CPU module (hereinafter referred to as the
CPU).
The Q64RD is a module for connection of 3-wire or 4-wire type platinum RTDs (2-wire
application is available if terminals are short-circuited.) and converts temperature data
[ ] input from Pt100 or JPt100 platinum RTD (hereinafter referred to as PT100 or
JPt100) to:
• 16-bit signed binary data (stored as a value rounded off to 1 decimal place
• 32-bit signed binary data (stored as a value rounded off to 3 decimal places
and scaling values (ratios (%)).
The Q64RD-G is a module for connection of 3-wire or 4-wire type RTDs (2-wire
application is available if terminals are short-circuited.) and converts temperature data
[ ] input from Pt100, JPt100 or nickel RTD Ni100
Ni100 ) to:
• 16-bit signed binary data (stored as a value rounded off to 1 decimal place
• 32-bit signed binary data (stored as a value rounded off to 3 decimal places
and scaling values (ratios (%)).
Programmable controller
1 - 1
CPU
(Buffer memory)
Initial setting
TO
instruction
Measured
temperature
value, scaling
value reading
FROM
instruction
*: Refer to Section 3.4.15 for details of the scaling values.
(hereinafter referred to as
Q64RD/Q64RD-G
Set data
Measured
temperature
value
Channel 1
*
Scaling value
Measured
temperature
value
*
Scaling value Channel 4
MELSEC-Q
1
10)
1000)
10)
1000)
RTD
RTD
1 - 1