User`s manual

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MELSEC-Q
7 ONLINE MODULE CHANGE
7.4 Range Reference Table
The range reference tables are given below.
(1) Reference table for offset/gain values of industrial shipment
settings (buffer memory addresses 202 to 209: Un\G202 to 209)
The reference values change depending on the setting of the pass data
classification setting (buffer memory address 200: Un\G200).
Address (Decimal)
CH1 CH2
Description Pass data classification setting
Reference value
(Hexadecimal)
User range setting 1 Approx. 7FC0
H
User range setting 2 Approx. 7FC0
H
202 204
Industrial shipment settings offset
value (used for D/A)
User range setting 3 Approx. 14EA
H
User range setting 1 Approx. F310
H
User range setting 2 Approx. E830
H
203 205
Industrial shipment settings gain value
(used for D/A)
User range setting 3 Approx. 6895
H
User range setting 1 Approx. 0005
H
User range setting 2 Approx. 0920
H
206 208
Industrial shipment settings offset
value (used for monitor output)
User range setting 3 Approx. 1060
H
User range setting 1 Approx. 6665
H
User range setting 2 Approx. 519B
H
207 209
Industrial shipment settings gain value
(used for monitor output)
User range setting 3 Approx. 2D50
H
(2) Reference table for user range settings offset/gain values (buffer
memory addresses 210 to 217: Un\G210 to 217)
Example: When the offset value of channel 1 is 4mA and its gain value is 18mA
in user range settings 1, the user range settings offset/gain values are
as indicated below.
• CH1 user range settings offset value (for D/A conversion) : Approx. 96D0
H
(Buffer memory address 210: Un\G210)
• CH1 user range settings gain value (for D/A conversion) : Approx. E788
H
(Buffer memory address 211: Un\G211)
• CH1 user range settings offset value (for monitor output) : Approx. 147E
H
(Buffer memory address 214: Un\G214)
• CH1 user range settings gain value (for monitor output) : Approx. 5C29
H
(Buffer memory address 215: Un\G215)
Offset/gain value
Reference value for D/A
conversion (Hexadecimal)
Reference value for monitor
output (Hexadecimal)
0mA Approx. 7FC0
H
Approx. 0005
H
4mA Approx. 96D0
H
Approx. 147E
H
User range
setting 1
20mA Approx. F310H
Approx. 6665
H
-10V Approx. 6870
H
Approx. C0A5
H
0V Approx. 7FC0
H
Approx. 0920
H
User range
setting 2
10V Approx. E830H
Approx. 519B
H
1V Approx. 14EA
H
Approx. 01060
H
User range
setting 3
5V Approx. 6895
H
Approx. 2D50
H
7.5 Precautions for Online Module Change
The following are the precautions for online module change.
(1) Always perform an online module change in the correct procedure. A failure to do
so can cause a malfunction or failure.
(2) If an online module change is made with the user range setting, the accuracy
after that will fall to about less than three times of the accuracy before that.
Re-set the offset/gain values as necessary.