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Details Of Related Devices - Mitsubishi Electric FX5 User Manual

Melsec iq-f series.
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Details of related devices

The devices described below are used in predefined protocol support function.
Serial communication error
Turns ON when an error occurs in serial communication. These flags are for check of the serial communication error.
CH1
CH2
SM8500
SM8510
R: Read only
After a device above turns ON, the error code is stored in the corresponding device below.
CH1
CH2
SD8500
SD8510
Precautions
Do not turn ON or OFF with program or engineering tool.
Serial communication error does not turn OFF even if the communication is restored to normal state. The devices turn OFF
when power is turned OFFON, RUNSTOP, system is reset or SM50 (Error Detection Reset Completion) is turned ON.
Serial communication error code
When a serial communication error occurs, these devices store the corresponding error codes (Page 201).
CH1
CH2
SD8500
SD8510
R: Read only
Precautions
Do not change the value with program or engineering tool.
Serial communication error code is not cleared even after communication is restored to normal state.
They are cleared by turning the PLC power OFFON, RUNSTOP, resetting the system or by SM50 (Error Detection Reset
Completion) is turned ON.
Serial communication settings
The communication parameters set in the communication settings are stored when the power is turned OFFON or the
system is reset. (Page 168 Communication Settings)
CH1
CH2
SD8502
SD8512
R: Read only
The descriptions of the communication parameters are as follows.
Bit No.
b0
b1
b2
b3
CH3
CH4
SM8520
SM8530
CH3
CH4
SD8520
SD8530
CH3
CH4
SD8520
SD8530
CH3
CH4
SD8522
SD8532
Name
Data length
Parity bit
Stop bit
Description
Turns ON when an error occurs in serial
communication.
Name
Serial communication error
code
Description
When a serial communication error occurs, the error
code is stored.
Description
Stores the setting of the communication parameter.
Description
0 (bit = OFF)
7 bits
b2, b1
(0, 0): Not provided
(0, 1): Odd
(1, 1): Even
1 bit
6 PREDEFINED PROTOCOL SUPPORT FUNCTION
R/W
R
Description
When a serial communication error occurs,
the error code is stored.
R/W
R
R/W
R
1 (bit = ON)
8 bits
2 bits
6.10 Related Devices
6
205

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