Mitsubishi Electric QJ71MB91 User Manual page 232

Modbus interface module
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9
PROGRAMMING
(4) Precautions for automatic communication parameter setting
9
- 3
9.1 Parameter Setting
9.1.1 Automatic communication parameters
(a) When turning ON the Automatic communication parameter setting request/
Automatic communication start request (Y4/YC)
Make sure both of the following input signal conditions are satisfied.
• Condition 1: Module READY (X0) is ON.
• Condition 2: Intelligent function module switch setting change status (X10) is
OFF.
(b) When automatic communication parameter setting completes with an error
The erroneous automatic communication parameter is stored in the Automatic
communication parameter setting result storage area of the buffer memory
/0C19
(address: 0C17
H
communication parameter error code storage area (address: 0C16
Identify the stored parameter, check the error code and take corrective actions.
Then make the parameter setting request again.(
(c) Clearing the automatic communication function buffer
The Automatic communication function buffer input area (address: 1000
1FFF
/2000
to 2FFF
H
H
area (address: 3000
write setting are not cleared when the automatic communication function is
started.
If necessary, clear these areas by a sequence program.
), and an error code is stored in the Automatic
H
) and the Automatic communication function buffer output
H
to 3FFF
/4000
to 4FFF
H
H
H
/0C18
H
Section 11.4)
) used for the buffer memory read/
H
).
H
to
H

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