Mitsubishi Electric Melsec Q Series User Manual page 70

4 SETUP AND PROCEDURES BEFORE OPERATION
1 The mode switching (normal mode to offset/gain setting mode to normal mode)
2 Do not perform the following during
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method is given below.
• Dedicated instruction (G(P).OFFGAN) ....... Refer to Section 4.6 (2), (a)
• Setting made to Mode switching setting (buffer memory address 158, 159: Un\G158,
Un\G159) and turning Operating condition setting request (Y9) from off to on
....................................................................... Refer to Section 4.6 (2), (b)
• Intelligent function module switch setting ... Refer to Section 4.5, Section 4.6 (2),
(c)
(After intelligent function module switch setting, reset the programmable controller
CPU or switch power off, then on.)
E 2 PROM data and the A/D converter module may not operate properly.
• Powering off the programmable controller CPU.
• Resetting the programmable controller CPU.
POINT
(1) Perform the offset/gain settings in the range that satisfies the conditions
specified in Section 3.1.2, (1) and (2).
When the setting exceeds this range, the maximum resolution or total accuracy
may not be within the range indicated in the performance specification.
(2) Though the offset/gain settings can be performed on multiple channels at the
same time, set the offset and gain separately (0 at either Offset/gain setting
mode Offset specification (buffer memory address 22: Un\G22) or Offset/gain
setting mode Gain specification (buffer memory address 23: Un\G23)). If
channels are set in Offset/gain setting mode Offset specification (buffer
memory address 22: Un\G22) and Offset/gain setting mode Gain specification
(buffer memory address 23: Un\G23) at the same time, an error will occur and
the ERROR LED will be lit.
(3) After the offset/gain settings are completed, verify that the offset and gain
values have been set correctly under actual usage conditions.
(4) The offset and gain values are stored into the E
power-off.
(5) At the time of offset/gain setting, turn on User range writing request (YA) to
write the values to the E
Data can be written to the E
To prevent improper writing to the E
when values are written 26 times continuously.
(6) If an error (error code: 40
correct offset/gain value again.
The offset/gain value of the channel where the error has occurred is not written
to the A/D converter module. ( 1:
number.)
(7) Module READY (X0) turns from off to on when the offset/gain setting mode
switches to the normal mode by the dedicated instruction (G(P).OFFGAN) or
the setting of Mode switching setting (buffer memory address 158, 159:
Un\G158, Un\G159).
Note that initial setting processing will be executed if there is a sequence
program that makes initial setting when Module READY (X0) turns on.
(8) Pass data classification setting (buffer memory address 200: Un\G200) and
Industrial shipment settings and user range settings offset/gain values (buffer
memory address 202 to 233: Un\G202 to 233) are the areas used to restore
offset/gain values of user range settings when online module change is made.
Refer to chapter 7 for details of online module change.
2 operation. If performed, an error occurs in
PROM.
2
2 PROM up to 100 thousand times.
2 PROM, an error (error code: 162) occurs
1
) occurs during offset/gain setting, set the
indicates the corresponding channel
MELSEC-Q
2 PROM and are not erased at
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